MediaCategoryViewController: Always play the entire playlist

This merge request brings an adjustment to the playlists.

When the playback is started based on a playlist, every media stored in it will be added to the play queue even if the "Automatically play next item" option is disabled.

Closes #1585

changed milestone to %3.4.1

added Feature Maintenance labels

approved this merge request

enabled an automatic merge when the pipeline for a683b59e succeeds

mentioned in merge request !1000 (merged)

merged

mentioned in issue #1345