Add support for validation jobs to `sync.ts`, and refactor #11696

Job	Run time
check-codeql-versions	17s
analyze-other (actions)	55s
analyze-other (python)	58s
analyze-javascript (ubuntu-22.04)	4m 31s
analyze-javascript (windows-2022)	8m 27s
analyze-javascript (windows-2022, linked)	6m 13s
analyze-javascript (macos-14, linked)	5m 51s
analyze-javascript (ubuntu-22.04, linked)	4m 28s
analyze-javascript (ubuntu-24.04, linked)	4m 18s
analyze-javascript (windows-2025, linked)	6m 29s
analyze-javascript (windows-2025)	6m 33s
analyze-javascript (ubuntu-24.04)	4m 26s
analyze-javascript (macos-15, linked)	8m 4s
analyze-javascript (macos-15)	10m 30s
analyze-javascript (macos-14)	6m 49s
	1h 18m 49s

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