feat: set oauth2 stats prefix to securitypolicy name

[zhaohuabing]

implement: #7501

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.27%. Comparing base (70ea1aa) to head (d828bb0).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7502      +/-   ##
==========================================
- Coverage   72.33%   72.27%   -0.07%     
==========================================
  Files         232      232              
  Lines       34151    34152       +1     
==========================================
- Hits        24704    24682      -22     
- Misses       7672     7689      +17     
- Partials     1775     1781       +6     

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