[text-autospace] Adopt UTR#59

This patch changes the `text-autospace` to use [UTR#59] as per
the CSS WG resolution.

This means that the previous optimizations no longer apply.
To avoid the performance hit, this patch has two new
optimizations.

1. Uses `MayNeedEastAsianSpacing` to filter unapplicable text.
2. After that, the `InlineTextAutoSpace::Apply` runs. It must
   do, at least:
    a. Iterate all code points.
    b. Compute the `EastAsianSpacingType` for each code point.
   This patch does as little things as possible other than
   above two, when there are no Wide code points.

When the flag is enabled, no visible impact to the
Speedometer3 score is observed. The Layout microbenchmarks are
a bit noisy; 2/4 runs are neutral, while 2 are mixed.

Note that not all old code were removed yet. They will be in
following patches.

[UTR#59]: https://unicode.org/reports/tr59/

Bug: 40275399
Change-Id: I8c482a62594795f297d758d464efcd87fadd74a7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6572353
Commit-Queue: Koji Ishii <kojii@chromium.org>
Reviewed-by: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1465954}