Fixed that emergency alert text-to-speech does not work

For ETWS alert, we used to only support text-to-speech
in Japanese language. Now added support for more languages.

Test: Manual
Bug: 117590557
Merged-In: I3447b59162897f7d5d9cc1c9f7c9a07991c8334d
Change-Id: I3447b59162897f7d5d9cc1c9f7c9a07991c8334d
(cherry picked from commit b224caa8857135ba4074868302dad97300304fcc)
3 files changed