fix: preserve lambda grouping and dialect JSON arrows #895

Job	Run time
Grammar Choice Conflicts	39s
Gradle Check (windows-latest)	4m 29s
Gradle Check (ubuntu-latest)	3m 40s
Gradle Check (macos-latest)	3m 51s
Maven Verify (macos-latest)	4m 53s
Maven Verify (ubuntu-latest)	3m 26s
Maven Verify (windows-latest)	4m 12s
Build & Deploy Sphinx Docs	-1s
Gradle Publish (Maven Central)	-1s
	25m 8s

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