Router: refactor handling fewer braces in select #5795

Job	Run time
formatting	21s
native-image (macOS-latest, default)	6m 22s
community-test (11, windows-latest, Scala2)	14m 44s
native-image (ubuntu-latest, default)	4m 17s
test (11, windows-latest)	11m 8s
community-test (11, windows-latest, Scala3)	13m 57s
native-image (ubuntu-latest, musl)	4m 31s
test-scala-native (windows-latest)	10m 2s
test (11, ubuntu-latest)	8m 33s
community-test (11, windows-latest, Spark)	26m 1s
test-scala-native (ubuntu-latest)	6m 28s
test (21, windows-latest)	10m 49s
community-test (11, windows-latest, Intellij)	16m 31s
test (21, ubuntu-latest)	7m 47s
community-test (11, windows-latest, Other)	19m 42s
community-test (11, ubuntu-latest, Scala2)	12m 41s
community-test (11, ubuntu-latest, Scala3)	12m 54s
community-test (11, ubuntu-latest, Spark)	21m 32s
community-test (11, ubuntu-latest, Intellij)	15m 38s
community-test (11, ubuntu-latest, Other)	15m 57s
dockerize	0s
	3h 59m 55s

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