Trigger tier-up faster for small functions, while waiting longer
for big functions, while trying to keep the overall amount of
optimization roughly the same.

Change-Id: I279daa21e151e9db20340089f9fa111141c6e645
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3779910Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82026}