Added insert_node path checking to match how other operations are app…

…lied (#4230)

* Added try/finally to editor.apply and Editor.withoutNormalizing for state cleanup

* Added insert_node path checking to match how other operations are applied

.changeset/bright-pants-grin.md

@@ -0,0 +1,5 @@
+---
+'slate': minor
+---
+
+Applying invalid `insert_node` operations will now throw an exception for all invalid paths, not just invalid parent paths.

.changeset/sixty-glasses-beg.md

@@ -0,0 +1,5 @@
+---
+'slate': patch
+---
+
+Exceptions in `editor.apply()` and `Editor.withoutNormalizing()` will no longer leave the editor in an invalid state

packages/slate/src/interfaces/editor.ts

@@ -1648,8 +1648,11 @@ export const Editor: EditorInterface = {
   withoutNormalizing(editor: Editor, fn: () => void): void {
     const value = Editor.isNormalizing(editor)
     NORMALIZING.set(editor, false)
-    fn()
-    NORMALIZING.set(editor, value)
+    try {
+      fn()
+    } finally {
+      NORMALIZING.set(editor, value)
+    }
     Editor.normalize(editor)
   },
 }