fix(windows-agent): No empty agent.yaml #3852

Job	Run time
C++ Quality Checks	1m 43s
Flutter Quality checks (ubuntu, p4w_ms_store)	1m 26s
Flutter integration tests (windows)	7m 14s
Flutter Quality checks (ubuntu, ubuntupro)	3m 8s
Flutter Quality checks (windows, p4w_ms_store)	2m 42s
Go Quality checks (ubuntu, agentapi)	1m 37s
Run Go tests with mocks (ubuntu, windows-agent)	8m 13s
Flutter Quality checks (windows, ubuntupro)	5m 12s
Go Quality checks (ubuntu, contractsapi)	51s
Run Go tests with mocks (ubuntu, wsl-pro-service)	4m 55s
Go Quality checks (ubuntu, mocks)	40s
Run Go tests with mocks (ubuntu, common)	1m 31s
Run Go tests with mocks (windows, storeapi/go-wrapper/microsoftstore)	2m 15s
Go Quality checks (ubuntu, storeapi/go-wrapper/microsoftstore)	40s
Run Go tests with mocks (windows, windows-agent)	6m 2s
Go Quality checks (ubuntu, windows-agent)	47s
Run Go tests with mocks (windows, common)	2m 1s
Go Quality checks (ubuntu, wsl-pro-service)	46s
Go Quality checks (ubuntu, common)	52s
Go Quality checks (windows, agentapi)	4m 39s
Go Quality checks (windows, contractsapi)	3m 37s
Go Quality checks (windows, mocks)	3m 49s
Go Quality checks (windows, storeapi/go-wrapper/microsoftstore)	3m 21s
Go Quality checks (windows, windows-agent)	3m 49s
Go Quality checks (windows, end-to-end)	4m 11s
Go Quality checks (windows, common)	4m 8s
	1h 20m 9s

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