Stop WPMS from trying to rebind to a disconnected wallpaper service

To prevent the cases where the connection is switched while the
disconnection runnable is running waiting for the lock.

Bug: 332871851
Flag: com.android.window.flags.avoid_rebinding_intentionally_disconnected_wallpaper
Test: atest WallpaperManagerTest

Change-Id: I3d68d3caae740305e1f2ee88f8bace44465a6462