[path_provider_android] Re-enable getExternalStorageDirectories (type: ...) test #139808
Description
To address #139378, the getExternalStorageDirectories (type: ...) integration test in path_provider_android (see source) was disabled in flutter/packages#5619.
A fix for this flake should be investigated to re-enable this test. See the previously mentioned issue for more details on the test failure.