[Bug]: Snapshot tab (Action/Before/After) in trace viewer missing keyboard navigation

[triemerge]

Version

1.62.0-next

Steps to reproduce

1. open ui mode, run a test with tracing
2. tab/click into the Action tab in the snapshot panel
3. hit ArrowRight

Expected behavior

Focus moves to the Before tab

Actual behavior

Nothing happens, focus stays on Action

Additional context

Noticed while working on #41284, the snapshot panel tablist has role="tablist" with TabbedPaneTab children but no onKeyDown handler:

playwright/packages/trace-viewer/src/ui/snapshotTab.tsx

Line 73 in d0c98af

<div className='hbox' style={{ height: '100%' }} role='tablist'>

the handleTabListKeyDown utility is already wired up in both TabbedPane components and NetworkFilters but was missed here.

I would like to work on this fix

Environment

System:
    OS: Linux 6.17 Ubuntu 24.04.4 LTS (Noble Numbat)
    CPU: (4) x64 11th Gen Intel(R) Core(TM) i3-1115G4 @ 3.00GHz
  Binaries:
    Node: 24.15.0
    npm: 11.12.1