In collator and localeCompare, we have an incorrect optimization
for zero length string that compare the length and ignore the
fact some non zero length string could be considered as equal to
a zero length string because the content are all ignoreable.
Took out this incorrect optimization with test cases.
The regression is introduced in
6fbb8bc806 which first appeared in 97.0.4665.0
Bug: chromium:1347690
Change-Id: Ie70feb9598b1842f8a8744c38f33b3397865abfd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3832526
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Jakob Linke <jgruber@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82632}
