Add "# COMPONENT" to icu4j OWNERS file

See https://tinyurl.com/yxau5sc4 for context.

Bug: 977050
Change-Id: Iec67e7ca79e4ff262c61c6f58606a0d746a91f6f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1846818Reviewed-by: John Budorick <jbudorick@chromium.org>
Commit-Queue: John Budorick <jbudorick@chromium.org>
Auto-Submit: Eric Foo <efoo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#703909}

third_party/icu4j/OWNERS

 jbudorick@chromium.org
 mikecase@chromium.org
-yolandyan@chromium.org
+yolandyan@chromium.org
\ No newline at end of file
+
+# COMPONENT: Test>Android