[dkhawk]

This PR proposes a couple of improvements to #1822:

1. 4-argument convenience constructor:
   Adds a constructor (context: Context, map: GoogleMap, mainContext: CoroutineContext, backgroundContext: CoroutineContext) that defaults markerManager to MarkerManager(map). This is especially useful for developers injecting dispatchers (such as in tests or DI frameworks) who don't need a custom MarkerManager.
2. Parameter naming cleanup:
   Renames constructor parameter mMap -> map to adhere to modern Kotlin coding conventions, while retaining the backing property private val mMap for compatibility.
3. Unit tests & ABI dump:
   Adds a unit test validating the 4-arg constructor with test dispatchers, cleans up MockK verifications with clearMocks(), and updates clustering.api.

[googlemaps-bot]

Code Coverage

Overall Project	60.64%	🍏
Files changed	100%	🍏

Module	Coverage
Kover Gradle Plugin XML report for :clustering	33.93%	🍏

Files

Module	File	Coverage
Kover Gradle Plugin XML report for :clustering	ClusterManager.kt	81.21%	🍏