0.21.7.1155 RC

- Fixed crash when inline results have contact without avatar
- Fixed edge case that could lead dismissed notification from private chats to re-appear after application restart
- Fixed crash while audio playback error occurs
- Fixed rare crash while updating polls state
- Fixed rare crash while releasing resources related to replies
- Fixed potential issue that could prevent some notifications from showing after using "Erase all data"
- Internal debugging for catching frozen accounts issue