Migrate remaining dynamic-icons Avatar usages (follow-up to #98031) #99461

Background

PR #98031 migrated raw Avatar call sites across 33 files to UserAvatar (or Icon / AccountAvatar where appropriate), removing duplicated avatar-resolution logic and per-site Onyx lookups.

As called out in that PR, some Avatar uses were intentionally left un-migrated because they depend on dynamic icons and can render as either a User or a workspace/Avatar depending on runtime data.

Task

Finish the migration by handling the remaining dynamic-icons Avatar call sites that PR #98031 left in place:

1. Audit the remaining raw Avatar usages that resolve their type dynamically at runtime.
2. Migrate each to the appropriate abstraction (UserAvatar, AccountAvatar, Icon, or a suitable component that handles the dynamic user-vs-workspace case) so fallback and tooltip behavior stays consistent.
3. Verify no visual/behavioral regressions across the affected surfaces (chats, avatars in previews, member/profile pages, etc.).

Related

• Parent: #95600 — [M4] Migrate User Avatar usages
• Prior PR: #98031 — Migrate User Avatar usages