Add support for validation jobs to `sync.ts`, and refactor #11743

Job	Run time
analyze-other (python)	1m 0s
check-codeql-versions	15s
analyze-other (actions)	52s
analyze-javascript (ubuntu-24.04)	4m 38s
analyze-javascript (windows-2022)	6m 32s
analyze-javascript (macos-14, linked)	6m 29s
analyze-javascript (ubuntu-22.04)	4m 31s
analyze-javascript (windows-2025)	6m 13s
analyze-javascript (windows-2022, linked)	6m 13s
analyze-javascript (ubuntu-24.04, linked)	4m 22s
analyze-javascript (windows-2025, linked)	7m 0s
analyze-javascript (macos-15, linked)	8m 24s
analyze-javascript (macos-15)	6m 26s
analyze-javascript (macos-14)	6m 29s
analyze-javascript (ubuntu-22.04, linked)	4m 23s
	1h 13m 47s

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