Support shorthand forms for `getRemoteConfig` #12609

Job	Run time
analyze-other (python)	41s
analyze-other (actions)	37s
check-codeql-versions	11s
analyze-javascript (ubuntu-22.04, linked)	4m 19s
analyze-javascript (macos-14-xlarge)	2m 31s
analyze-javascript (ubuntu-24.04)	4m 49s
analyze-javascript (macos-15-xlarge)	2m 25s
analyze-javascript (windows-2022, linked)	5m 26s
analyze-javascript (ubuntu-22.04)	4m 34s
analyze-javascript (windows-2025, linked)	5m 43s
analyze-javascript (windows-2025)	5m 22s
analyze-javascript (windows-2022)	5m 20s
analyze-javascript (macos-14-xlarge, linked)	2m 27s
analyze-javascript (ubuntu-24.04, linked)	4m 21s
analyze-javascript (macos-15-xlarge, linked)	2m 36s
	51m 22s

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