Test

fix: allow using nullable strings in template literals #4868

Job	Run time
Check	4s
Bootstrap (debug)	4m 21s
Compiler (ubuntu, node current)	1m 53s
Features	23s
Bootstrap (release)	4m 52s
Compiler (macos, node lts/*)	1m 26s
Runtimes	30s
Loader	20s
Compiler (macos, node current)	1m 9s
Compiler (windows, node current)	2m 20s
Compiler (windows, node lts/*)	3m 27s
Coverage	4m 10s
Compiler (ubuntu, node lts/*)	2m 3s
	26m 58s

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