(Easy) Rename RCTNotAllowedInFabric to RCTNotAllowedInAppWideFabric

Summary:
Changelog: [iOS][Internal] Rename RCTNotAllowedInFabric to RCTNotAllowedInAppWideFabric

Clarify that methods marked with `RCTNotAllowedInAppWideFabric` are only NOT available when Fabric is app-wide (which is necessary for app-wide Bridgeless mode). These methods may still be called in apps with legacy pre-Fabric surfaces.

Reviewed By: RSNara

Differential Revision: D35194789

fbshipit-source-id: e16fa54d22ea67be995e93f6ff60567a117398be

React/Base/RCTAssert.h

@@ -173,16 +173,16 @@ RCT_EXTERN NSString *RCTFormatStackTrace(NSArray<NSDictionary<NSString *, id> *>
 // MARK: - New Architecture Validation
 
 typedef enum {
-  RCTNotAllowedInFabric = 1,
+  RCTNotAllowedInAppWideFabric = 1,
   RCTNotAllowedInBridgeless = 2,
 } RCTNotAllowedValidation;
 
 /**
  * Ensure runtime assumptions holds for the new architecture by reporting when assumptions are violated.
  * Note: this is work in progress.
  *
- * When type is RCTNotAllowedInFabric, validate Fabric assumptions in Bridge or Bridgeless mode.
- * i.e. Report legacy pre-Fabric call sites that should not be used while Fabric is enabled,
+ * When type is RCTNotAllowedInAppWideFabric, validate Fabric assumptions in Bridge or Bridgeless mode.
+ * i.e. Report legacy pre-Fabric call sites that should not be used while Fabric is enabled on all surfaces.
  *
  * When type is RCTNotAllowedInBridgeless, validate Bridgeless assumptions, in Bridgeless mode only.
  * i.e. Report Bridge call sites that should not be used while Bridgeless mode is enabled.

React/Base/RCTAssert.m

@@ -253,9 +253,9 @@ RCTFatalExceptionHandler RCTGetFatalExceptionHandler(void)
 static BOOL shouldEnforceValidation(RCTNotAllowedValidation type)
 {
   switch (type) {
-    case RCTNotAllowedInFabric:
+    case RCTNotAllowedInAppWideFabric:
       return validationReportingEnabled == RCTNotAllowedInBridgeless ||
-          validationReportingEnabled == RCTNotAllowedInFabric;
+          validationReportingEnabled == RCTNotAllowedInAppWideFabric;
     case RCTNotAllowedInBridgeless:
       return validationReportingEnabled == RCTNotAllowedInBridgeless;
   }
@@ -279,7 +279,7 @@ static BOOL shouldEnforceValidation(RCTNotAllowedValidation type)
 {
   NSString *notAllowedType;
   switch (type) {
-    case RCTNotAllowedInFabric:
+    case RCTNotAllowedInAppWideFabric:
       notAllowedType = @"Fabric";
       break;
     case RCTNotAllowedInBridgeless: