Remove `add-snippets` input #10766

Job	Run time
check-codeql-versions	32s
analyze-other (actions)	49s
analyze-other (python)	1m 0s
analyze-javascript (ubuntu-22.04, linked)	4m 29s
analyze-javascript (ubuntu-24.04, linked)	4m 23s
analyze-javascript (windows-2022)	5m 41s
analyze-javascript (ubuntu-22.04)	3m 59s
analyze-javascript (windows-2022, linked)	5m 13s
analyze-javascript (ubuntu-24.04)	4m 13s
analyze-javascript (macos-15, linked)	5m 16s
analyze-javascript (macos-13)	11m 56s
analyze-javascript (macos-13, linked)	9m 22s
analyze-javascript (macos-14)	6m 55s
analyze-javascript (macos-14, linked)	7m 54s
analyze-javascript (windows-2025, linked)	5m 31s
analyze-javascript (macos-15)	5m 29s
analyze-javascript (windows-2025)	5m 11s
	1h 27m 53s

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