* fix automatic DM avatar with functional members
* add tests for functional members
* add snapshot for functional members avatar test
* update snapshot for functional members avatar test
* restore mocks after each functional members avatar test
* refactor DecoratedRoomAvatar-test
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Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
Co-authored-by: R Midhun Suresh <hi@midhun.dev>