MRT ZH (Chinese) locale accuracies (MUI and Mantine)

[KevinVandy]

@LvChengbin @samchiu90 @bluelovers @anyone-yuren @StringKe
I wanted to open a discussion with all who have contributed Zh* locales in the past to verify that the current locales are now still accurate after the most recent updates. These locales have had the most changes and discussion of any other locale.

This PR in Mantine MRT was a big update that I brought over 2 weeks ago too (by @StringKe)

If any of you would be kind enough to confirm or discuss any issues here, that would be nice.

https://github.com/KevinVandy/material-react-table/blob/v2/packages/material-react-table/src/locales/zh-Hans.ts
https://github.com/KevinVandy/material-react-table/blob/v2/packages/material-react-table/src/locales/zh-Hant.ts

As I confirm these are accurate, they will be copied over exactly to the Mantine version of MRT.

Any help or thoughts or explanations are appreciated. Open to splitting into multiple ZH-* locales if necessary.