Add flag to control LegacyBindingGraphFactory usage. #5054

Job	Run time
Gradle build	30s
Validate Dagger version	14s
Bazel tests	17m 33s
Bazel build	4m 34s
Artifact verification tests	11m 25s
Test Hilt Gradle plugin	8m 24s
Artifact Android local tests (AGP 8.1.1)	11m 11s
Artifact Java local tests	3m 47s
Artifact Android emulator tests (API ${{ matrix.api-level }})	0s
Build Hilt Gradle plugin against latest AGP version	0s
Clean up GitHub Action caches	5s
Publish snapshot	0s
	57m 43s

Provide feedback