fix: ReactRootView checkForKeyboardEvents to check if rootInsets are set (#35869)

Summary:
react-native-navigation allows to register React components to be included in the navigation top bar as buttons, the way this work is by using the AppRegistry. When the ViewTreeObserver executes the `CustomGlobalLayout` we are checking for the RootWindowInsets in the `checkKeyboardEvents` which in the case for the top bar component it returns null and the **WindowInsetsCompat.toWindowInsetsCompat** function throws if the insets are null causing the app to crash.

Interestingly in the function `checkForKeyboardEventsLegacy` the null value is being checked, so I guess it was overlooked in the newer function.

## Changelog

[ANDROID] [FIXED] - Fix ReactRootView crash when root view window insets are null

Pull Request resolved: #35869

Test Plan:
The following videos show how the app crashes as soon as we attempt to pop a screen that contains a react component as a button in the navigation top bar and how it correctly pops to the previous screen after applying the fix

| Crash | Fix |
| -- | -- |
| https://user-images.githubusercontent.com/6757047/213116971-fe693989-f978-438c-b8f9-fc56f2a477c8.mp4 | https://user-images.githubusercontent.com/6757047/213118352-fe258f28-07aa-4d17-98d2-97136464ffd5.mp4 |

Reviewed By: cipolleschi

Differential Revision: D42580156

Pulled By: cortinico

fbshipit-source-id: 4dbd656d7c8148df67668a2a50913206bc35c07f

Author: enahum

ReactAndroid/src/main/java/com/facebook/react/ReactRootView.java

@@ -923,38 +923,40 @@ public void onGlobalLayout() {
     private void checkForKeyboardEvents() {
       getRootView().getWindowVisibleDisplayFrame(mVisibleViewArea);
       WindowInsets rootInsets = getRootView().getRootWindowInsets();
-      WindowInsetsCompat compatRootInsets = WindowInsetsCompat.toWindowInsetsCompat(rootInsets);
-
-      boolean keyboardIsVisible = compatRootInsets.isVisible(WindowInsetsCompat.Type.ime());
-      if (keyboardIsVisible != mKeyboardIsVisible) {
-        mKeyboardIsVisible = keyboardIsVisible;
-
-        if (keyboardIsVisible) {
-          Insets imeInsets = compatRootInsets.getInsets(WindowInsetsCompat.Type.ime());
-          Insets barInsets = compatRootInsets.getInsets(WindowInsetsCompat.Type.systemBars());
-          int height = imeInsets.bottom - barInsets.bottom;
-
-          int softInputMode = ((Activity) getContext()).getWindow().getAttributes().softInputMode;
-          int screenY =
-              softInputMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING
-                  ? mVisibleViewArea.bottom - height
-                  : mVisibleViewArea.bottom;
-
-          sendEvent(
-              "keyboardDidShow",
-              createKeyboardEventPayload(
-                  PixelUtil.toDIPFromPixel(screenY),
-                  PixelUtil.toDIPFromPixel(mVisibleViewArea.left),
-                  PixelUtil.toDIPFromPixel(mVisibleViewArea.width()),
-                  PixelUtil.toDIPFromPixel(height)));
-        } else {
-          sendEvent(
-              "keyboardDidHide",
-              createKeyboardEventPayload(
-                  PixelUtil.toDIPFromPixel(mLastHeight),
-                  0,
-                  PixelUtil.toDIPFromPixel(mVisibleViewArea.width()),
-                  0));
+      if (rootInsets != null) {
+        WindowInsetsCompat compatRootInsets = WindowInsetsCompat.toWindowInsetsCompat(rootInsets);
+
+        boolean keyboardIsVisible = compatRootInsets.isVisible(WindowInsetsCompat.Type.ime());
+        if (keyboardIsVisible != mKeyboardIsVisible) {
+          mKeyboardIsVisible = keyboardIsVisible;
+
+          if (keyboardIsVisible) {
+            Insets imeInsets = compatRootInsets.getInsets(WindowInsetsCompat.Type.ime());
+            Insets barInsets = compatRootInsets.getInsets(WindowInsetsCompat.Type.systemBars());
+            int height = imeInsets.bottom - barInsets.bottom;
+
+            int softInputMode = ((Activity) getContext()).getWindow().getAttributes().softInputMode;
+            int screenY =
+                softInputMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING
+                    ? mVisibleViewArea.bottom - height
+                    : mVisibleViewArea.bottom;
+
+            sendEvent(
+                "keyboardDidShow",
+                createKeyboardEventPayload(
+                    PixelUtil.toDIPFromPixel(screenY),
+                    PixelUtil.toDIPFromPixel(mVisibleViewArea.left),
+                    PixelUtil.toDIPFromPixel(mVisibleViewArea.width()),
+                    PixelUtil.toDIPFromPixel(height)));
+          } else {
+            sendEvent(
+                "keyboardDidHide",
+                createKeyboardEventPayload(
+                    PixelUtil.toDIPFromPixel(mLastHeight),
+                    0,
+                    PixelUtil.toDIPFromPixel(mVisibleViewArea.width()),
+                    0));
+          }
         }
       }
     }

packages/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/TaskConfiguration.kt

@@ -22,14 +22,16 @@ internal fun Project.configureReactTasks(variant: Variant, config: ReactExtensio
   val targetName = variant.name.replaceFirstChar { it.uppercase() }
   val targetPath = variant.name
 
-  // React js bundle directories
+  // Resources: generated/assets/react/<variant>/index.android.bundle
   val resourcesDir = File(buildDir, "generated/res/react/$targetPath")
-  // Bundle: generated/assets/react/path/index.android.bundle
+  // Bundle: generated/assets/react/<variant>/index.android.bundle
   val jsBundleDir = File(buildDir, "generated/assets/react/$targetPath")
-  // Sourcemap: generated/sourcemaps/react/path/index.android.bundle.map
+  // Sourcemap: generated/sourcemaps/react/<variant>/index.android.bundle.map
   val jsSourceMapsDir = File(buildDir, "generated/sourcemaps/react/$targetPath")
-  // Intermediate packager: intermediates/sourcemaps/react/path/index.android.bundle.packager.map
-  // Intermediate compiler: intermediates/sourcemaps/react/path/index.android.bundle.compiler.map
+  // Intermediate packager:
+  // intermediates/sourcemaps/react/<variant>/index.android.bundle.packager.map
+  // Intermediate compiler:
+  // intermediates/sourcemaps/react/<variant>/index.android.bundle.compiler.map
   val jsIntermediateSourceMapsDir = File(buildDir, "intermediates/sourcemaps/react/$targetPath")
 
   // The location of the cli.js file for React Native