Revert "css-text: Fix an issue on justification with a bidi isolate control"

This reverts commit aea8539f.

Reason for revert: Causes consistent failure on msan builders for test
CachingWordShaperTest.SegmentEmojiSubdivisionFlags. More details in
crbug.com/331834503.

Original change's description:
> css-text: Fix an issue on justification with a bidi isolate control
>
> Do not reset `is_after_expansion` state by a default ignorable code
> point, which includes bidi controls.
>
> Bug: 331680200
> Change-Id: I2c79ec467052861e9048b0b7575e8f29dc0570b0
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5401304


> Commit-Queue: Koji Ishii <kojii@chromium.org>
> Auto-Submit: Kent Tamura <tkent@chromium.org>
> Reviewed-by: Koji Ishii <kojii@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1280093}

Bug: 331680200
Change-Id: I8f2ff68ffa0a8d29f9d8d4fa827046bc84d3a366
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5407434
Commit-Queue: thefrog <thefrog@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: thefrog <thefrog@chromium.org>
Owners-Override: thefrog <thefrog@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1280293}