Fix crash on ReactEditText with AppCompat 1.4.0

Summary:
This Diff fixes a crash happening as the user uses AppCompat 1.4.0
as a dependency in their App and uses a `TextInput` component.

The crash happens as `mFabricViewStateManager` is accessed during
the ctor of the superclass, and is not yet initialized.

Fixes facebook#31572

Changelog:
[Android] [Fixed] - Fix crash on ReactEditText with AppCompat 1.4.0

Reviewed By: ShikaSD

Differential Revision: D32674975

fbshipit-source-id: efa413f5e33527a29fbcfa729e8b006ecb235978

ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactEditText.java

@@ -114,7 +114,8 @@ public class ReactEditText extends AppCompatEditText
 
   private ReactViewBackgroundManager mReactBackgroundManager;
 
-  private final FabricViewStateManager mFabricViewStateManager = new FabricViewStateManager();
+  private final @Nullable FabricViewStateManager mFabricViewStateManager =
+      new FabricViewStateManager();
   protected boolean mDisableTextDiffing = false;
 
   protected boolean mIsSettingTextFromState = false;
@@ -746,7 +747,9 @@ private void setIntrinsicContentSize() {
     // view, we don't need to construct one or apply it at all - it provides no use in Fabric.
     ReactContext reactContext = getReactContext(this);
 
-    if (!mFabricViewStateManager.hasStateWrapper() && !reactContext.isBridgeless()) {
+    if (mFabricViewStateManager != null
+        && !mFabricViewStateManager.hasStateWrapper()
+        && !reactContext.isBridgeless()) {
       final ReactTextInputLocalData localData = new ReactTextInputLocalData(this);
       UIManagerModule uiManager = reactContext.getNativeModule(UIManagerModule.class);
       if (uiManager != null) {
@@ -978,7 +981,7 @@ public FabricViewStateManager getFabricViewStateManager() {
    */
   private void updateCachedSpannable(boolean resetStyles) {
     // Noops in non-Fabric
-    if (!mFabricViewStateManager.hasStateWrapper()) {
+    if (mFabricViewStateManager != null && !mFabricViewStateManager.hasStateWrapper()) {
       return;
     }
     // If this view doesn't have an ID yet, we don't have a cache key, so bail here