libkmpris: refresh player when track list changes
Reason for the change
For some players when the current track list changes, it doesn't list all changed properties in the PropertiesChanged signal from org.mpris.MediaPlayer2.Player. This adds a check for the track list so when the track list changes, the player information is refreshed.
Test plan
Screenshots or screen recordings
Bugs fixed
BUG: 490569 FIXED-IN: 6.1.5