Instead of checking for locale, check language specifically.

Should be checking for english language as seen here: https://source.corp.google.com/h/googleplex-android/platform/superproject/main/+/main:libcore/ojluni/src/main/java/java/util/Locale.java;l=1374?q=locale%20getLanguage&sq=repo:googleplex-android%2Fplatform%2Fsuperproject%2Fmain%20b:main

This gives the language code which is what we should be checking against according to https://yaqs.corp.google.com/eng/q/4542431059247104.

bug: 373670311
Test: Manually - tried with various other "ENGLISH" languages besides US. Including Bermuda/UK and non english languages
Flag: NONE locale checking
Change-Id: Ib2eff4c9a13b74ede8575ee8d5280bbf9b9b8729