TAC: Release Announcement (#12380)

* WIP

* Store the release announcements in the account settings

* Update TAC release announcement description

* Fix settings content comparison

* Add logging in case of failure

* Watch settings changes

* I add release announcement settings to disable it

* Disable release announcement in e2e test

* Add release announcement in e2e test

* Add tests for ReleaseAnnouncementStore.ts

* Update compound-web to `3.3.0`

* Update TAC tests

* Update Labs tests

* Nits

* Add test for ReleaseAnnouncement.tsx

* Update `@vector-im/compound-web`

* Add playwright snapshot

* Delete false playwright screenshot

* Wait for EW to be displayed after reload

* Add screenshot

* Clean util file

* Renaming and comments fixing

* Use second store instead of looking in the store.

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Co-authored-by: R Midhun Suresh <hi@midhun.dev>

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