BBQ: Attach calling thread to jvm if needed

When BBQ is destroyed from a native thread created by
the app, getEnv fails because the calling thread is not
attached to the jvm. To fix this, check the result when
getting the env from the jvm and attach the current
thread if needed.

Test: app in bug doesnt crash when resumed
Fixes: 236780458
Change-Id: Ib82b9b372167df60ad230ac309099db9f4a1a1fc