Router: consolidate splits around lambda #5199

Job	Run time
formatting	25s
test (11, windows-latest)	11m 38s
native-image (macOS-12, default)	6m 27s
test (11, ubuntu-latest)	8m 44s
community-test (11, windows-latest, Scala2)	17m 12s
native-image (ubuntu-latest, default)	3m 32s
test-scala-native (windows-latest)	11m 34s
test (21, windows-latest)	11m 1s
community-test (11, windows-latest, Scala3)	20m 23s
native-image (ubuntu-latest, musl)	3m 41s
test (21, ubuntu-latest)	7m 50s
test-scala-native (ubuntu-latest)	6m 44s
community-test (11, windows-latest, Spark)	22m 44s
community-test (11, windows-latest, Other)	6m 21s
community-test (11, ubuntu-latest, Scala2)	15m 28s
community-test (11, ubuntu-latest, Scala3)	17m 55s
community-test (11, ubuntu-latest, Spark)	19m 59s
community-test (11, ubuntu-latest, Other)	5m 37s
dockerize	0s
	3h 17m 15s

Provide feedback