Router: use only possible split if `( comment NL` #6215

Job	Run time
native-image (macOS-latest, default)	5m 46s
native-image (ubuntu-latest, default)	4m 23s
test (11, windows-latest, jvm, 2.12.20)	6m 3s
test (11, windows-latest, jvm, 2.13.16)	5m 53s
native-image (ubuntu-latest, musl)	4m 29s
test (11, windows-latest, native, 2.12.20)	12m 7s
community-test (11, windows-latest, Scala2)	14m 48s
test (11, windows-latest, native, 2.13.16)	13m 52s
formatting	20s
community-test (11, windows-latest, Scala3)	14m 13s
test (11, ubuntu-latest, jvm, 2.12.20)	5m 1s
community-test (11, windows-latest, Spark)	23m 56s
test (11, ubuntu-latest, jvm, 2.13.16)	4m 47s
community-test (11, windows-latest, Intellij)	16m 44s
scala-native	0s
test (11, ubuntu-latest, native, 2.12.20)	8m 54s
community-test (11, windows-latest, Other)	20m 53s
test (11, ubuntu-latest, native, 2.13.16)	11m 53s
community-test (11, ubuntu-latest, Scala2)	13m 20s
test (21, windows-latest, jvm, 2.12.20)	6m 7s
community-test (11, ubuntu-latest, Scala3)	12m 2s
test (21, windows-latest, jvm, 2.13.16)	6m 53s
community-test (11, ubuntu-latest, Spark)	22m 22s
test (21, windows-latest, native, 2.12.20)	10m 52s
community-test (11, ubuntu-latest, Intellij)	15m 15s
test (21, windows-latest, native, 2.13.16)	14m 30s
community-test (11, ubuntu-latest, Other)	16m 38s
test (21, ubuntu-latest, jvm, 2.12.20)	4m 39s
test (21, ubuntu-latest, jvm, 2.13.16)	4m 26s
test (21, ubuntu-latest, native, 2.12.20)	9m 1s
test (21, ubuntu-latest, native, 2.13.16)	10m 34s
dockerize	0s
	5h 20m 41s

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