Rolling v8/third_party/icu: https://chromium.googlesource.com/chromium/deps/icu/+log/ea8c08d..a9359a8

Move back to single android icu data file. (Mohamed Heikal)
https://chromium.googlesource.com/chromium/deps/icu/+/a9359a8

R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com,ftang@chromium.org

Change-Id: I14c6e7b436a98555a4e1ba9e8a0958aaa0d43d57
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3538221
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#79536}