Update AI assistance guidelines in CONTRIBUTING.md #35695

Job	Run time
lint	59s
coverage	11m 24s
format	28s
Test Node lts/* on ubuntu-latest with --no-bundle	11m 4s
package-size	1m 34s
baselines	9m 27s
Test Node 24 on ubuntu-latest	7m 5s
Test Node 14 on ubuntu-latest	12m 12s
knip	38s
browser-integration	1m 29s
Test Node 24 on windows-latest	10m 26s
Test Node 14 on windows-latest	12m 8s
typecheck	42s
self-check	57s
smoke	53s
misc	23s
required	3s
	1h 21m 52s

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