fix(ios): fix debug issues with scenes (#13979)

* Revert "Revert "feat(ios): support multi-scene applications (#13941)""

This reverts commit 4a1d20f.

* fix: defer loading kroll-core to scene initialization
# Conflicts:
#	iphone/TitaniumKit/TitaniumKit/Sources/API/TiApp.m

iphone/TitaniumKit/TitaniumKit/Sources/API/TiApp.m

@@ -416,12 +416,6 @@ - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(
   // If a "application-launch-url" is set, launch it directly
   [self launchToUrl];
 
-  // Boot our kroll-core
-  [self boot];
-
-  // Create application support directory if not exists
-  [self createDefaultDirectories];
-
   return YES;
 }
 
@@ -1238,6 +1232,12 @@ - (void)scene:(UIScene *)scene willConnectToSession:(UISceneSession *)session op
 
   // Initialize the root-controller
   [self initController];
+
+  // Boot our kroll-core
+  [self boot];
+
+  // Create application support directory if not exists
+  [self createDefaultDirectories];
 }
 
 #pragma mark Background Tasks