Add better `needs_web` check to CI (#5863) #12364

Job	Run time
Ready-to-merge gate / Missing "ready-to-merge" label	2s
detect-changes / Detect file changes	5s
diff_check / diff_check	2s
Build legacy ios dev dynamic-frameworks	9m 21s
Build legacy ios production no-frameworks	9m 41s
Build legacy android dev no-frameworks	9m 8s
Build new android dev no-frameworks	11m 7s
Build new ios production no-frameworks	11m 18s
Build legacy ios dev no-frameworks	8m 42s
Build new android production no-frameworks	12m 48s
Build new ios dev no-frameworks	10m 23s
Build legacy macos dev no-frameworks	6m 42s
Build legacy macos production no-frameworks	7m 17s
Build legacy ios production dynamic-frameworks	9m 55s
Build legacy android production no-frameworks	9m 29s
Test ios production REV2	4m 52s
Test android production REV2	6m 10s
	2h 7m 2s

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