fix freeze when getting metrics and a RTSP connection is being created (#4179)

[aler9]

Fixes #4179

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 56.50%. Comparing base (a1c6da8) to head (8664268).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/servers/rtsp/conn.go	0.00%	1 Missing ⚠️
internal/servers/rtsp/server.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4216      +/-   ##
==========================================
- Coverage   56.50%   56.50%   -0.01%     
==========================================
  Files         202      202              
  Lines       20656    20653       -3     
==========================================
- Hits        11672    11669       -3     
  Misses       8115     8115              
  Partials      869      869              

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

[github-actions]

This issue is mentioned in release v1.11.3 🚀
Check out the entire changelog by clicking here