List workloads once to ensure consistency

[amirejaz]

List workloads in group once at the start of ensureAllResources and pass the result to functions that need it, instead of listing at different times which could yield different results.

This ensures all functions use the same workload list snapshot, improving consistency and reducing API calls.

[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 56.68%. Comparing base (f57d84a) to head (cb6d3dc).
⚠️ Report is 9 commits behind head on main.

Files with missing lines	Patch %	Lines
...perator/controllers/virtualmcpserver_controller.go	58.33%	2 Missing and 3 partials ⚠️
...perator/controllers/virtualmcpserver_deployment.go	33.33%	4 Missing ⚠️
...perator/controllers/virtualmcpserver_vmcpconfig.go	50.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@ Coverage Diff @@ ## main #2867 +/- ## ========================================== + Coverage 56.59% 56.68% +0.08%  ========================================== Files 322 322 Lines 31247 31269 +22 ========================================== + Hits 17685 17725 +40  + Misses 12042 12028 -14  + Partials 1520 1516 -4 

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