don't call Name.splits on absolute argument #9962

Job	Run time
ormolu	6s
build ucm (ubuntu-20.04)	2m 48s
build ucm (macOS-13)	5m 50s
build ucm (windows-2019)	6m 49s
generate jit source	10s
run interpreter tests (ubuntu-20.04)	1m 3s
run transcripts (ubuntu-20.04)	4m 16s
run transcripts (macos-13)	6m 41s
run interpreter tests (macos-13)	2m 1s
run transcripts (windows-2019)	9m 23s
build jit binary / build jit binary (ubuntu-20.04)	10s
build jit binary / build jit binary (macOS-13)	17s
build jit binary / build jit binary (windows-2019)	17s
test jit / test jit (ubuntu-20.04)	7s
test jit / test jit (macOS-13)	16s
	40m 14s

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