Remove `disable_combine_sarif_files` feature flag #7224

Job	Run time
Packaging: Action input (macos-latest, linked)	1m 44s
Packaging: Action input (ubuntu-latest, nightly-latest)	1m 20s
Packaging: Action input (windows-latest, linked)	2m 6s
Packaging: Action input (ubuntu-latest, default)	1m 5s
Packaging: Action input (windows-latest, default)	2m 31s
Packaging: Action input (windows-latest, nightly-latest)	3m 55s
Packaging: Action input (ubuntu-latest, linked)	59s
Packaging: Action input (macos-latest, nightly-latest)	2m 17s
Packaging: Action input (macos-latest, default)	2m 46s
	18m 43s

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