Remove `add-snippets` input #8257

Job	Run time
Split workflow (ubuntu-latest, linked)	1m 18s
Split workflow (macos-latest, linked)	1m 36s
Split workflow (ubuntu-latest, nightly-latest)	1m 19s
Split workflow (macos-latest, default)	1m 49s
Split workflow (macos-latest, nightly-latest)	1m 47s
Split workflow (ubuntu-latest, default)	1m 25s
	9m 14s

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