Fix mini visualizer state in HeaderMediaListActivity

Before this MR:

• open a playlist screen
• play any item
• pause
• change orientation
• the visualizer is still animated

This was due to a refactor issue creating the adapter too early and setting the model to the wrong adapter.

changed milestone to %3.6.x

added UI bug labels

requested review from @Skantes

added 1 commit

• b67e94a4 - Fix the mini visualizer leaking the HeaderMediaListActivity

Compare with previous version

approved this merge request

added 4 commits

• b67e94a4...c13ab6a9 - 2 commits from branch videolan:master
• 95d137cf - Fix mini visualizer state in HeaderMediaListActivity
• 7da67c5d - Fix the mini visualizer leaking the HeaderMediaListActivity

Compare with previous version

enabled an automatic merge when the pipeline for 7da67c5d succeeds

merged