align ratelimitPDB name with envoyPDB

[zirain]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.08%. Comparing base (398cd8a) to head (e99d4b6).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7369      +/-   ##
==========================================
+ Coverage   72.03%   72.08%   +0.04%     
==========================================
  Files         231      231              
  Lines       33468    33468              
==========================================
+ Hits        24108    24124      +16     
+ Misses       7604     7593      -11     
+ Partials     1756     1751       -5     

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