fix(maps-compose): apply initial camera during map creation

[RotBolt]

Fixes #491.

Summary

• Apply CameraPositionState.position to GoogleMapOptions before MapView creation when the factory has not set a camera.
• Preserve a camera explicitly supplied through googleMapOptionsFactory.
• Add instrumentation coverage for both option paths.

Validation

• :maps-compose:compileDebugKotlin — passed
• :maps-app:compileDebugAndroidTestKotlin — passed
• :maps-compose:testDebugUnitTest — passed (no unit tests in module)
• lint — passed
• Both new focused instrumentation tests — passed on Pixel 10 Pro Fold emulator

The full GoogleMapViewTests run also included 17 tests that require a Maps API key; they were assumption-failed because no key is configured.

• Opened issue before implementation
• Tests added
• Lint passed
• Coverage report reviewed

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