Don't emit nodes when calling .asBool on a Bool (backport #3637) #6533

Job	Run time
Formatting	45s
ci (ubuntu-20.04, 8, 2.13.10, 2.4, firtool-1.37.0)	17m 41s
Integration Tests (w/ chiseltest)	3m 19s
Standard Library Tests (2.13.10)	1m 16s
ci (ubuntu-20.04, 8, 2.12.17, 2.4, firtool-1.37.0)	17m 37s
Standard Library Tests (2.12.17)	1m 41s
Test Scala-CLI Template	2m 0s
Build Mdoc & Website	4m 45s
check tests	1s
all tests passed	1s
publish	0s
	49m 6s

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