[Autofill] Enable new form extraction features for captured sites tests

Bug: 1201875, 1215333
Change-Id: I5fb0372298311fedcdf03f547eecf190df1dbbf1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3124794


Reviewed-by: Mohamed Amir Yosef <mamir@chromium.org>
Reviewed-by: Christoph Schwering <schwering@google.com>
Commit-Queue: Eva Herencsárová <evih@google.com>
Cr-Commit-Position: refs/heads/main@{#915937}