fix(windows-agent): Don't bail out if WSL adapter is not available #3896

Job	Run time
Flutter Quality checks (ubuntu, p4w_ms_store)	1m 32s
Flutter Quality checks (ubuntu, ubuntupro)	2m 50s
Go Quality checks (ubuntu, agentapi)	2m 2s
Flutter Quality checks (windows, p4w_ms_store)	2m 35s
Go Quality checks (ubuntu, contractsapi)	1m 30s
Flutter Quality checks (windows, ubuntupro)	6m 55s
Go Quality checks (ubuntu, mocks)	1m 43s
Flutter integration tests (windows)	8m 14s
Go Quality checks (ubuntu, storeapi/go-wrapper/microsoftstore)	1m 36s
Go Quality checks (ubuntu, windows-agent)	1m 32s
C++ Quality Checks	2m 13s
Run Go tests with mocks (ubuntu, windows-agent)	7m 37s
Run Go tests with mocks (ubuntu, wsl-pro-service)	4m 29s
Run Go tests with mocks (ubuntu, common)	1m 19s
Go Quality checks (ubuntu, wsl-pro-service)	1m 34s
Go Quality checks (ubuntu, common)	1m 32s
Run Go tests with mocks (windows, storeapi/go-wrapper/microsoftstore)	3m 57s
Run Go tests with mocks (windows, windows-agent)	6m 22s
Go Quality checks (windows, agentapi)	4m 45s
Go Quality checks (windows, contractsapi)	3m 22s
Go Quality checks (windows, mocks)	3m 37s
Run Go tests with mocks (windows, common)	1m 35s
Go Quality checks (windows, storeapi/go-wrapper/microsoftstore)	3m 45s
Go Quality checks (windows, windows-agent)	3m 37s
Go Quality checks (windows, end-to-end)	3m 34s
Go Quality checks (windows, common)	3m 33s
	1h 27m 20s

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