The CL refactors the following builtins:
  String.prototype.startsWith
  String.prototype.endsWith

to use ClampToIndexRange(x, len) instead of NumberMin(NumberMax(x, 0), len).

Bug: v8:8996
Change-Id: I20ab42088168e517840385cc2db435361004d9c0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1873702
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64500}