chore(clustering): use idiomatic poll().let in cluster renderers for null-safety

[dkhawk]

Summary

Replaces redundant !queue.isEmpty() checks and unsafe .poll() platform-type invocations in performNextTask() across cluster renderers with idiomatic Kotlin queue.poll()?.let { ...; return }.

Details

• Queue.poll() is a Java platform method returning a nullable type (AnimationTask?). In strict nullability build environments (such as google3 with -Xjsr305=strict), calling queue.poll().perform() produces unsafe nullable receiver errors.
• In Kotlin, queue.poll() returns null if empty, making pre-checks with !queue.isEmpty() redundant. Using poll()?.let performs a single atomic queue retrieval, safely smart-casts it to non-null, and immediately returns once the highest-priority queued task is handled.

Files Updated

• DefaultAdvancedMarkersClusterRenderer.kt
• DefaultClusterRenderer.kt
• ClusterRendererMultipleItems.kt

Reviewer

cc @LoyalAbbas

[googlemaps-bot]

Code Coverage

Overall Project	44.77% -0.5%	🍏
Files changed	0%	❌

Module	Coverage
clustering	20.32% -1.6%	❌

Files

Module	File	Coverage
clustering	DefaultAdvancedMarkersClusterRenderer.kt	0% -2.45%	❌
	ClusterRendererMultipleItems.kt	0% -1.98%	❌
	DefaultClusterRenderer.kt	0% -2.42%	❌

[kikoso]

LGTM

[LoyalAbbas]

LGTM