fix: AdvancedMarker pinConfig, pending camera moves and Street View source

[kikoso]

Three small bug fixes in maps-compose, each with a JVM unit test.

AdvancedMarker drops pinConfig on first composition

When the node is inserted, update(icon) ran after update(pinConfig). With icon == null it called setIcon(null) and replaced the PinConfig glyph with the default pin. This hit the common AdvancedMarker(state, pinConfig = ...) case (README example, AdvancedMarkersActivity). Both update blocks now resolve the icon through advancedMarkerIcon(), which uses the factory's precedence (pinConfig over icon), so a null icon no longer overwrites a set pinConfig.

Setting position before the map binds did not override a pending move()/animate()

With no map bound, the position setter only wrote rawPosition. When the map bound, setMap() moved to the new position and then ran the stale pending move or animation, overwriting it. That contradicts the move() and animate() KDoc. The setter now cancels the pending callback and clears movementOwner.

StreetViewCameraPositionState.setPosition dropped source without radius

setPosition(latLng, source = OUTDOOR) fell through to setPosition(latLng). It now calls StreetViewPanorama.setPosition(LatLng, StreetViewSource).

Tests

maps-compose had no unit tests. FakeMapsSdk.kt adds small java.lang.reflect.Proxy fakes of the SDK delegate interfaces (IGoogleMapDelegate, IStreetViewPanoramaDelegate, ICameraUpdateFactoryDelegate) that record calls, so these run on the JVM with no new dependencies. I checked that the camera and Street View tests fail without their fixes.

• ./gradlew :maps-compose:testDebugUnitTest: 10 tests pass
• ./gradlew :maps-compose:lintDebug: no new issues (existing PotentialBehaviorOverride warnings in MapApplier.kt)
• Spotless: clean on all changed files

BEGIN_COMMIT_OVERRIDE
fix(markers): keep the pinConfig icon on AdvancedMarker when icon is null
fix(camera): setting position while unbound cancels a pending move or animation
fix(streetview): forward source in setPosition when radius is null
END_COMMIT_OVERRIDE

[github-actions]

Coverage (unit tests)

Compared against cdf8b7f on main (#1044).

Module	Line %	Change	Branch %	Change
maps-compose	3.94%	🔺 +3.94	1.60%	🔺 +1.60
maps-compose-utils	2.17%	no change	0.94%	no change
maps-compose-widgets	0.00%	no change	0.00%	no change
TOTAL	3.35%	🔺 +2.90	1.43%	🔺 +1.26

_{Line and branch coverage from unit test reports. History is recorded on the coverage-history branch after each merge to main.}

[googlemaps-bot]

Coverage (instrumentation tests)

Overall Project	44.54% -0.11%	🍏
Files changed	47.62%	❌

Module	Coverage
maps-app	63.36% -0.27%	❌

Files

Module	File	Coverage
maps-app	CameraPositionState.kt	68.88% -0.25%	🍏
	Marker.kt	64.66% -0.61%	❌
	StreetViewCameraPositionState.kt	37.25% -5.88%	❌