fix: Rejecting duplicate component identifier as required by the RFC

[dadrus]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 71.42857% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 94.48%. Comparing base (aeed528) to head (c8161a4).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
signature_parameters.go	71.42%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #119      +/-   ##
==========================================
- Coverage   94.60%   94.48%   -0.13%     
==========================================
  Files          18       18              
  Lines        1316     1323       +7     
==========================================
+ Hits         1245     1250       +5     
- Misses         36       37       +1     
- Partials       35       36       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.