fix: prevent auto-refresh when sketch is stopped

[iRahul360]

Issue:

Fixes #4288

Demo:

Changes:

1. Added automatic draft saving for unsent messages in the message composer.
2. Drafts are persisted separately for each room.
3. Restored the saved draft when returning to the room.
4. Drafts are saved when navigating away from or closing the chat.
5. Cleared the saved draft after the message is successfully sent.
6. Added/updated tests to verify draft persistence and restoration.

I have verified that this pull request:

• has no linting errors (npm run lint)
• has no test errors (npm run test)
• has no typecheck errors (npm run typecheck)
• is from a uniquely-named feature branch and is up to date with the develop branch.
• is descriptively named and links to an issue number, i.e. Fixes #123
• meets the standards outlined in the accessibility guidelines