Adopt copilot/sdk session-title APIs and sync title across session list, editor, CLI (#312038)

* working changes to keep session title with panel and cli resume

Co-authored-by: Copilot <copilot@github.com>

* allow syncing of session title from side bar and editor tab

Co-authored-by: Copilot <copilot@github.com>

* remove raceCanellation

Co-authored-by: Copilot <copilot@github.com>

* Stop using <T> for void

Co-authored-by: Copilot <copilot@github.com>

* better name

Co-authored-by: Copilot <copilot@github.com>

* stage title locally when SDK session isn't materialized yet

Co-authored-by: Copilot <copilot@github.com>

* rename to fix test

* futher unify title resolution through single resolver

Co-authored-by: Copilot <copilot@github.com>

---------

Co-authored-by: Copilot <copilot@github.com>