Remove `add-snippets` input #10768

Job	Run time
check-codeql-versions	33s
analyze-other (python)	57s
analyze-other (actions)	49s
analyze-javascript (ubuntu-22.04)	4m 25s
analyze-javascript (ubuntu-24.04, linked)	4m 5s
analyze-javascript (ubuntu-22.04, linked)	4m 23s
analyze-javascript (windows-2022, linked)	5m 0s
analyze-javascript (windows-2022)	5m 21s
analyze-javascript (ubuntu-24.04)	4m 8s
analyze-javascript (macos-14)	8m 3s
analyze-javascript (macos-15)	9m 6s
analyze-javascript (macos-13, linked)	10m 45s
analyze-javascript (windows-2025)	6m 15s
analyze-javascript (macos-14, linked)	8m 32s
analyze-javascript (windows-2025, linked)	6m 20s
analyze-javascript (macos-13)	8m 28s
analyze-javascript (macos-15, linked)	8m 20s
	1h 35m 30s

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