Roll Plugins from 92a5367 to 4e5cf2d (8 revisions) (#118624)

* d607cd9 Roll Flutter from 0d91c03 to 2201698 (28 revisions) (flutter/plugins#6953)

* e2d174c [tool] Check for search paths in Swift plugins (flutter/plugins#6954)

* f80aabf [shared_preferences] Revert recent iOS example changes (flutter/plugins#6955)

* f36fa64 [android_webview_controller] Fixes bug where an `AndroidController` couldn't be reused (flutter/plugins#6910)

* b751ff1 [webview_flutter_android] Fixes crash when the Java `InstanceManager` was used after plugin was removed from engine (flutter/plugins#6943)

* 1efd518 Roll Flutter from 2201698 to 68dd63d (9 revisions) (flutter/plugins#6956)

* eda98cd Roll Flutter from 68dd63d to 1220245 (4 revisions) (flutter/plugins#6957)

* 4e5cf2d Roll Flutter from 1220245 to 8c2fdb8 (2 revisions) (flutter/plugins#6979)

bin/internal/flutter_plugins.version

@@ -1 +1 @@
-92a5367d58df5f9abbb800176e8b41a0d17bc353
+4e5cf2d2da27e7a09b6d46dd58c50b2de46756e1