[Split #88320] PR 10 - Compiler-clean pipeline hooks

[rlinoz]

Goal: Remove react-hooks eslint disables across pipeline hooks and clean legacy effect patterns.

Scope:

• Update useMarkAsRead.ts
• Update useUnreadMarker.ts
• Update useReportActionsScroll.ts
• Update useReportActionsPagination.ts
• Update useTransactionThread.ts
• Simplify ReportActionsList.tsx header gate after extracted header is safe

Risk: Low. Behavior-preserving tooling cleanup.

Depends on: #89770

Parent issue: #88320
Source plan: #88320 (comment)

Issue Owner

Current Issue Owner: @DylanDylann

[DylanDylann]

Not overdue