Fix profanity being detected in numeric/punctuation-only text

[tudddorrr]

Profanity filter false positive fix

• Numeric-only strings (e.g. coordinates like "142,460") were being flagged as profane because the matcher decoded them as leetspeak, producing words like "goza".
• The profanity check now skips strings that contain no Unicode letters, since leetspeak decoding is only relevant when letters are present.
• This prevents game data such as coordinate arrays from being incorrectly rejected when blockPropsProfanity is enabled.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.31%. Comparing base (c34f084) to head (28fa369).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1016      +/-   ##
===========================================
- Coverage    98.33%   98.31%   -0.02%     
===========================================
  Files          439      439              
  Lines         7246     7248       +2     
  Branches       971      972       +1     
===========================================
+ Hits          7125     7126       +1     
  Misses          49       49              
- Partials        72       73       +1     

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