Use final state passed to dart before initialization as the initial lifecycleState. (#8124)

lib/ui/hooks.dart

@@ -92,7 +92,10 @@ void _updateUserSettingsData(String jsonData) {
 @pragma('vm:entry-point')
 // ignore: unused_element
 void _updateLifecycleState(String state) {
-  window._initialLifecycleState ??= state;
+  // We do not update the state if the state has already been used to initialize
+  // the lifecycleState.
+  if (!window._initialLifecycleStateAccessed)
+    window._initialLifecycleState = state;
 }
 
 

lib/ui/window.dart

@@ -562,8 +562,15 @@ class Window {
   ///
   /// It is used to initialize [SchedulerBinding.lifecycleState] at startup
   /// with any buffered lifecycle state events.
-  String get initialLifecycleState => _initialLifecycleState;
+  String get initialLifecycleState {
+    _initialLifecycleStateAccessed = true;
+    return _initialLifecycleState;
+  }
   String _initialLifecycleState;
+  /// Tracks if the initial state has been accessed. Once accessed, we
+  /// will stop updating the [initialLifecycleState], as it is not the
+  /// preferred way to access the state.
+  bool _initialLifecycleStateAccessed = false;
 
   /// The system-reported text scale.
   ///