Add default config file location for init action #3985

Job	Run time
Diagnostic export (ubuntu-latest, linked)	1m 2s
Diagnostic export (macos-latest, linked)	1m 1s
Diagnostic export (windows-latest, linked)	3m 35s
Diagnostic export (macos-latest, nightly-latest)	1m 3s
Diagnostic export (ubuntu-latest, nightly-latest)	1m 4s
Diagnostic export (windows-latest, nightly-latest)	4m 8s
	11m 53s

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