#40998 chore: paginated thread message list

Proposed changes (including videos or screenshots)

Issue(s)

CORE-2292

Steps to test or reproduce

Further comments

Summary by CodeRabbit

• New Features

  • Thread message viewing now uses infinite pagination, with seamless loading of newer and older messages during scrolling.
  • Message deep links can jump to a specific message and load surrounding context when it isn’t currently visible.

• Bug Fixes

  • Improved scroll stability when older thread messages are prepended.
  • Enhanced consistency for message updates, deletions, and read-status changes across paginated results.