[Reland] "[grit] Optionally output Android xml strings as a single zip file."

This enables us to simplify some GN logic and have fewer expected
outputs. We should be able to remove the java_strings_grd_prebuilt rule
altogether, since the only thing is does is zip Android xml files that
were generated by different rules. java_strings_grd can also be simpler
by removing its zipping logic.

Original CL
(https://chromium-review.googlesource.com/c/chromium/src/+/6509131) was
reverted because it was missing a line in
tools/gritsettings/translation_expectations.pyl. Thanks to
pabouchard@google.com for the fix, originally at
https://chromium-review.googlesource.com/c/chromium/src/+/6512808.

Change-Id: Ibf57a8de9b65d778102dbecd8df101c46f614bd6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6511926
Auto-Submit: Glenn Hartmann <hartmanng@chromium.org>
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Commit-Queue: Glenn Hartmann <hartmanng@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1456312}