[blink dom timers] Add LowerHighResolutionTimerThreshold to Webview production-supported flags.

Bug: 332721103
Change-Id: Iae11223bdf787df1bf0b2052d9390f1e2a1cc571
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5420412


Reviewed-by: Etienne Pierre-Doray <etiennep@chromium.org>
Auto-Submit: Francois Pierre Doray <fdoray@chromium.org>
Commit-Queue: Francois Pierre Doray <fdoray@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1282705}