Converts and uses of RuntimeCallTimerScopes that switch the counter
based on the thread, to use kThreadSpecific and remove the counter
selection.

Also moves RuntimeCallTimerScope::CounterMode to RuntimeCallStats,
since now CorrectCurrentCounterId also takes it as a parameter.

Bug: v8:10006
Change-Id: I14a503e0b83bb69c071f9665956de094bb33c0ba
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1928864Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65141}