Support Vietnam TFT through Google Play

[eyepax-sang]

Summary

• support the separate Vietnam TFT package while retaining the global client as a fallback
• add a persistent Google Play Android runtime and preserve it after TFT exits
• expose the OpenGL ES 3.2 capability required by current TFT releases and select ANGLE for both clients
• update installation, release, localization, and test coverage for the new runtime

Verification

• launcher regression tests pass
• run-tft-google-play.command passes zsh syntax validation
• git diff --check passes
• verified Google Play installs and launches com.riotgames.league.teamfighttacticsvn version 18.1-5402721 on the simulator
• verified the game renders through ANGLE/Vulkan on Apple Silicon

[eyepax-sang]

Superseded by #6, created from the chauvansang1997 fork under the correct account.