Handle stopped apps

Do not bind to MediaBrowserService for a stopped package.

Bug: 238433770
Bug: 314855224
Test: m -j
Test: manually force-stop an app with MediaBrowserService and toggle bluetooth off/on
      App should not be unstopped by bluetooth

Change-Id: I8809fb1dd81b2a5fc1b55be1b39d36e47e2f11b2