[staging-17.0] Merger master to staging-17.0 up to b858930cd

[darcywong00]

7 of x Merging master to staging-17.0 up to b858930cd

Keeps legacy/c/cs-pinyin/cs-pinyin.keyboard_info

Also addresses review comments from #2773 about

• fv_kwadacha_tsekene.keyboard_info content moving to .kps
• Fixes build failure of fv_kwadacha_tsekene