bugfix: tweak suffixify by hash logic #9267

Job	Run time
build ucm (ubuntu-20.04)	4m 45s
ormolu	11s
build ucm (macOS-12)	9m 12s
build ucm (windows-2019)	10m 6s
generate jit source	4s
run interpreter tests (ubuntu-20.04)	1m 8s
run transcripts (ubuntu-20.04)	3m 51s
run interpreter tests (macOS-12)	2m 58s
run transcripts (macOS-12)	9m 34s
run transcripts (windows-2019)	6m 48s
build jit binary / build jit binary (ubuntu-20.04)	8s
build jit binary / build jit binary (macOS-12)	18s
build jit binary / build jit binary (windows-2019)	20s
test jit / test jit (ubuntu-20.04)	11s
test jit / test jit (macOS-12)	13s
	49m 47s

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