Test

fix: use single precision for dtoa with f32 #4812

Job	Run time
Check	4s
Features	25s
Coverage	3m 32s
Bootstrap (debug)	2m 13s
Loader	19s
Bootstrap (release)	2m 27s
Compiler (ubuntu, node current)	1m 20s
Runtimes	29s
Compiler (ubuntu, node lts/*)	1m 18s
Compiler (macos, node current)	1m 4s
Compiler (macos, node lts/*)	1m 6s
Compiler (windows, node current)	1m 4s
Compiler (windows, node lts/*)	1m 5s
	16m 26s

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