Support shorthand forms for `getRemoteConfig` #8249

Job	Run time
Ruby analysis (macos-latest, default)	55s
Ruby analysis (ubuntu-latest, linked)	37s
Ruby analysis (macos-latest, nightly-latest)	58s
Ruby analysis (ubuntu-latest, default)	42s
Ruby analysis (macos-latest, linked)	52s
Ruby analysis (ubuntu-latest, nightly-latest)	45s
	4m 49s

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