Add feature to replace playlist with whole view contents on double-click

Some people are accustomed to double-clicking on a song in album list
views to replace the playlist with that album and start playing from the
double-clicked song. This commit makes that the new default behavior,
though it can be disabled.

BUG: 406469
CCBUG: 417610
CCBUG: 417284
FIXED-IN: 22.08