Allow const JSON imports with type narrowing #34861

Job	Run time
knip	30s
browser-integration	1m 46s
lint	58s
format	32s
smoke	1m 0s
package-size	1m 34s
baselines	10m 12s
coverage	12m 46s
typecheck	46s
self-check	58s
misc	29s
Test Node 24 on windows-latest	11m 25s
Test Node 22 on ubuntu-latest	11m 34s
Test Node 24 on macos-latest	14m 46s
Test Node 18 on ubuntu-latest	13m 22s
Test Node 22 on windows-latest	13m 53s
Test Node lts/* on ubuntu-latest with --no-bundle	12m 28s
Test Node 20 on windows-latest	14m 58s
Test Node 16 on windows-latest	15m 41s
Test Node 14 on ubuntu-latest	13m 11s
Test Node 18 on windows-latest	15m 48s
Test Node 24 on ubuntu-latest	9m 17s
Test Node 16 on macos-latest	11m 18s
Test Node 14 on windows-latest	15m 57s
Test Node 20 on ubuntu-latest	11m 45s
Test Node 16 on ubuntu-latest	12m 38s
required	2s
	3h 49m 34s

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