Allow validation room to report as occupied in scheduler update

[joaobologna]

Adds roomValidationAcceptOccupiedStatus config option (default: false) that allows the new version validation process to accept rooms with GameStatusOccupied status as valid. This is useful when validation rooms may be picked up by the matchmaker before reporting GameStatusReady, preventing validation errors in such scenarios.

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Note

Adds a configurable flag to treat GameStatusOccupied as a successful validation status during new scheduler version rollout.

• Core (scheduler new version validation):
  • Update internal/core/operations/schedulers/newversion/executor.go:
    • Extend Config with RoomValidationAcceptOccupiedStatus.
    • During validation, include GameStatusOccupied in accepted statuses when flag is enabled; treat it as success.
• Service config wiring:
  • Update internal/service/config.go to read services.roomManager.roomValidationAcceptOccupiedStatus and pass it into newversion.Config.
• Config:
  • Add services.roomManager.roomValidationAcceptOccupiedStatus: false to config/config.yaml (default false).
• Tests:
  • Add unit test in internal/core/operations/schedulers/newversion/executor_test.go verifying success when room reports GameStatusOccupied with flag enabled.

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