... not exceeding the maximum size of the backing store
before ReplacementStringBuilder in StringReplaceGlobalRegExpWithString.

Bug: v8:12843
Change-Id: I3ccf07a4e6de35a3a571ebfccc34e54eb27a0819
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3616555Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Jakob Linke <jgruber@chromium.org>
Commit-Queue: 王澳 <wangao.james@bytedance.com>
Cr-Commit-Position: refs/heads/main@{#80298}