fix: enhance file uploader with billing support and update translations

[WTW0313]

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Summary

Hide Max total {{limit}} files in CE and EE.

Fixes #35584

Screenshots

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Checklist

• This change requires a documentation update, included: Dify Document
• I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
• I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
• I've updated the documentation accordingly.
• I ran make lint && make type-check (backend) and cd web && pnpm exec vp staged (frontend) to appease the lint gods

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.64%. Comparing base (3a28868) to head (fb20ad1).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #35583      +/-   ##
==========================================
- Coverage   85.64%   85.64%   -0.01%     
==========================================
  Files        4454     4454              
  Lines      208892   208898       +6     
  Branches    39061    39065       +4     
==========================================
+ Hits       178902   178906       +4     
- Misses      26844    26847       +3     
+ Partials     3146     3145       -1     

Flag	Coverage Δ
dify-ui	93.01% <ø> (ø)
web	86.48% <100.00%> (-0.01%)	⬇️

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