modify the secrets propagation in the --from-configmap use case

[yrobla]

They need to be propagated as env vars, using the pod-patch, instead of being propagated as secrets, as they cause issue with the provider

In the future, we should actually modify that and use the withsecrets command, maybe adding some k8s secrets provider

Closes: #1873

[codecov]

Codecov Report

❌ Patch coverage is 18.75000% with 13 lines in your changes missing coverage. Please review.
✅ Project coverage is 46.79%. Comparing base (c4593a9) to head (1a66404).
⚠️ Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
...d/thv-operator/controllers/mcpserver_controller.go	0.00%	13 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1920      +/-   ##
==========================================
- Coverage   46.93%   46.79%   -0.14%     
==========================================
  Files         220      220              
  Lines       27340    27378      +38     
==========================================
- Hits        12831    12812      -19     
- Misses      13533    13591      +58     
+ Partials      976      975       -1     

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[coveralls]

coverage: 44.151% (-0.02%) from 44.166%
when pulling 1a66404 on issue-1873-v1
into 6084080 on main.