Test

fix: allow using nullable strings in template literals #4867

Job	Run time
Check	5s
Compiler (ubuntu, node lts/*)	2m 0s
Compiler (macos, node current)	1m 36s
Compiler (ubuntu, node current)	1m 47s
Bootstrap (debug)	4m 23s
Bootstrap (release)	4m 49s
Coverage	4m 12s
Runtimes	30s
Compiler (windows, node lts/*)	2m 17s
Compiler (macos, node lts/*)	1m 34s
Compiler (windows, node current)	1m 55s
Loader	18s
Features	21s
	25m 47s

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