Update Chinese & Cantonese localization (#7235)
* Update translates from crowdin
* Convert language codes from RFC-1766 to RFC-4646
* Update translates from crowdin
* Update deviceLocales.ts
* Revert 'changes zh-HK to yue'
* Fix zh-HK messages.po
* Revert 'en/messages.po'
* Update deviceLocales.ts
* Revert code comments
* Update translates from crowdin
* zh-TW: Improved translations
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