Merge changes I69b33b0c,If904c85e,I28444df4,I3bfa4580,I88d9667d, ... into rvc-dev
* changes:
Decrease avatar and sender name sizes in MessagingStyle
Fixed various conversation layout appearences
Implemented FacePile if no group icon is present
Fixed the behavior of headers in conversation groups
Ensured correct coloring of badge in dark mode
Fixed an issue where the bubble badge was visible independent of the icon
Improved transitions for expanding messaging notifications
Adjusted single line representation to include a colon
Made the expand button positioning conditional on expanded state
Ensured that the sender of the first message is hidden
Baseline for the new ConversationLayout