Fix flow/test errors and replace output with codegenLog

Author: kitten

packages/react-native/scripts/codegen/generate-artifacts-executor/utils.js

@@ -106,12 +106,10 @@ function readGeneratedAutolinkingOutput(
     'build/generated/autolinking/autolinking.json',
   );
   if (fs.existsSync(autolinkingGeneratedPath)) {
-    /* $FlowFixMe */
+    // $FlowFixMe[unsupported-syntax]
     return require(autolinkingGeneratedPath);
   } else {
-    console.warn(
-      `Could not find generated autolinking output at: ${autolinkingGeneratedPath}`,
-    );
+    codegenLog(`Could not find generated autolinking output at: ${autolinkingGeneratedPath}`);
     return null;
   }
 }
@@ -125,10 +123,10 @@ function readReactNativeConfig(
   if (autolinkingOutput) {
     return autolinkingOutput;
   } else if (fs.existsSync(rnConfigFilePath)) {
-    /* $FlowFixMe */
+    // $FlowFixMe[unsupported-syntax]
     return require(rnConfigFilePath);
   } else {
-    console.warn(`Could not find React Native config at: ${rnConfigFilePath}`);
+    codegenLog(`Could not find React Native config at: ${rnConfigFilePath}`);
     return {};
   }
 }