Continue after warning about unsupported lb protocol

[xoxys]

Fixes: #1128

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 64.77%. Comparing base (93f24b6) to head (56f1e6e).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1129      +/-   ##
==========================================
- Coverage   68.38%   64.77%   -3.62%     
==========================================
  Files          23       23              
  Lines        2619     2620       +1     
==========================================
- Hits         1791     1697      -94     
- Misses        654      755     +101     
+ Partials      174      168       -6     

Flag	Coverage Δ
e2e	?
unit	64.77% <100.00%> (+0.01%)	⬆️

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[lukasmetzner]

I think this should be fine to accept.

There might be the edge case of someone having a Service with UDP configured, but actually running a TCP application at the specified port. If we continue here, such Services should not get cleaned up. Therefore, this is not a breaking change, if someone relies on the current behavior.

Any thoughts @apricote ?