Fix warnings about instantiating new boxed primitives. #5002

Job	Run time
Validate Dagger version	13s
Bazel tests	5m 58s
Bazel build	3m 51s
Artifact verification tests	14m 47s
Artifact Android local tests (AGP 8.1.1)	9m 50s
Artifact Java local tests	3m 48s
Artifact Android emulator tests (API ${{ matrix.api-level }})	0s
Test Hilt Gradle plugin	11m 14s
Build Hilt Gradle plugin against latest AGP version	0s
Clean up GitHub Action caches	6s
Publish snapshot	0s
	49m 47s

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