Distinguish identity views from single-target views (backport #4186) #1952

Job	Run time
ci (ubuntu-22.04, 8, 2.13.12, 2.4) / compile project with mill	2m 45s
ci (ubuntu-22.04, 8, 2.13.12, 2.4) / ci	15m 14s
ci (ubuntu-22.04, 8, 2.13.12, 2.4) / Formatting	1m 31s
ci (ubuntu-22.04, 8, 2.13.12, 2.4) / Integration Tests	10m 20s
ci (ubuntu-22.04, 8, 2.13.12, 2.4) / Standard Library Tests (2.13.12)	2m 33s
ci (ubuntu-22.04, 8, 2.13.12, 2.4) / Build Mdoc & Website	5m 26s
ci (ubuntu-22.04, 8, 2.13.12, 2.4) / Test Scala-CLI Example / Build and Test	3m 33s
check tests	1s
all tests passed	1s
publish	0s
Deploy Website	0s
	41m 24s

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