feat: update simple Chinese translation

[slhmy]

🐸 Tranlated mostly by inlang but I found there is some mis-update there if I work completely with it !

Anyway, I filled most of the simple Chinese translation and fixed some obvious mistakes (old / new mistakes may still remain in some place although I have tried to re-check it...)

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PR Checklist

• My code adheres to AppFlowy's Conventions
• I've listed at least one issue that this PR fixes in the description above.
• I've added a test(s) to validate changes in this PR, or this PR only contains semantic changes.
• All existing tests are passing.

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[slhmy]

@appflowy 👋 Hi, I think I need approval to enable the remaining workflows, thanks！

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (412f34c) 10.19% compared to head (30436a5) 60.28%.

❗ Current head 30436a5 differs from pull request most recent head b5e9470. Consider uploading reports for the commit b5e9470 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #3963       +/-   ##
===========================================
+ Coverage   10.19%   60.28%   +50.08%     
===========================================
  Files         663      626       -37     
  Lines       30471    28982     -1489     
===========================================
+ Hits         3106    17471    +14365     
+ Misses      27365    11511    -15854     

Flag	Coverage Δ
appflowy_flutter_integrateion_test	58.50% <ø> (?)
appflowy_flutter_unit_test	10.66% <ø> (+0.47%)	⬆️

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