*: fix several bugs

[cosven]

Fix three issues

1. video does not show on macOS
2. song is marked as bad even if has mv media
3. user avatar never shows

[coveralls]

Pull Request Test Coverage Report for Build 7975616227

Details

• -14 of 19 (26.32%) changed or added relevant lines in 5 files are covered.
• 2 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-0.02%) to 55.335%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
feeluown/gui/components/avatar.py	0	1	0.0%
feeluown/gui/uimain/nowplaying_overlay.py	0	2	0.0%
feeluown/player/playlist.py	4	7	57.14%
feeluown/gui/watch.py	0	4	0.0%
feeluown/library/provider.py	1	5	20.0%

Files with Coverage Reduction	New Missed Lines	%
feeluown/gui/uimain/nowplaying_overlay.py	1	66.67%
feeluown/gui/watch.py	1	41.84%

Totals
Change from base Build 7974153956:	-0.02%
Covered Lines:	9076
Relevant Lines:	16402

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💛 - Coveralls