Note from T360585#9667973

A side note, the onboarding page should not auto select zh-hans and zh-hant either.
Also (this may be a bit off topic), Pinyin IME is mostly used in Simplified Chinese regions. For Traditional Chinese regions, Zhuyin > and Cangjie is more frequently used. If this is distinguishable the functionality could be further improved.

In the initial onboarding screen, the app will automatically select languages based on the keyboard languages, and we should check the logic if it needs to be changed due to the update of zh language variants logic.