Mark event loop nesting more carefully.

Fixes #5506. I hope fixes #5508.

Telegram/SourceFiles/platform/mac/specific_mac.mm

@@ -332,6 +332,10 @@ void OpenSystemSettingsForPermission(PermissionType type) {
 #endif // OS_MAC_OLD
 }
 
+bool NativeEventNestsLoop(void *message) {
+	return true;
+}
+
 } // namespace Platform
 
 void psNewVersion() {