Only run PR checks on Ubuntu by default #10402

Job	Run time
check-codeql-versions	40s
analyze-other (actions)	8s
analyze-other (python)	6s
analyze-javascript (ubuntu-22.04)	5s
analyze-javascript (ubuntu-24.04, linked)	8s
analyze-javascript (ubuntu-22.04, linked)	7s
analyze-javascript (windows-2022, linked)	15s
analyze-javascript (macos-13)	10s
analyze-javascript (ubuntu-24.04)	6s
analyze-javascript (macos-15, linked)	7s
analyze-javascript (macos-14, linked)	8s
analyze-javascript (windows-2022)	10s
analyze-javascript (macos-13, linked)	12s
analyze-javascript (macos-14)	8s
analyze-javascript (macos-15)	8s
analyze-javascript (windows-2025, linked)	17s
analyze-javascript (windows-2025)	16s
analyze-other (python)	56s
analyze-other (actions)	55s
analyze-javascript (ubuntu-22.04)	4m 11s
analyze-javascript (ubuntu-24.04)	3m 54s
analyze-javascript (windows-2022, linked)	5m 31s
check-codeql-versions	40s
analyze-javascript (windows-2022)	5m 36s
analyze-javascript (ubuntu-24.04, linked)	3m 59s
analyze-javascript (ubuntu-22.04, linked)	4m 8s
analyze-javascript (windows-2025)	5m 53s
analyze-javascript (windows-2025, linked)	6m 5s
analyze-javascript (macos-13)	5m 24s
analyze-javascript (macos-13, linked)	5m 51s
analyze-javascript (macos-14, linked)	7m 40s
analyze-javascript (macos-14)	6m 20s
analyze-javascript (macos-15, linked)	7m 42s
analyze-javascript (macos-15)	7m 56s
	1h 25m 52s

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