Focus next search result (F4) should work when there is a single result and is run again

[Tyriar]

Repro:

1. Search vscode for "interface ITerminalChild" (or any search with a single result)
2. Press F4
3. Switch to some other file
4. Press F4, nothing happens (presumably because the item is still selected in the search viewlet)

[roblourens]

I think this was fixed with #74142 but we can verify it separately

[Tyriar]

Doesn't work still