Merge branch 'feat/app-start-extension-android' into feat/app-start-extension-materialize

Author: buenaflor

sentry-android-core/src/main/java/io/sentry/android/core/performance/AppStartMetrics.java

@@ -87,7 +87,7 @@ public enum AppStartType {
   private @Nullable IContinuousProfiler appStartContinuousProfiler = null;
   private @Nullable TracesSamplingDecision appStartSamplingDecision = null;
   private boolean isCallbackRegistered = false;
-  private boolean shouldSendStartMeasurements = true;
+  private volatile boolean shouldSendStartMeasurements = true;
   private final AtomicInteger activeActivitiesCounter = new AtomicInteger();
   private final AtomicBoolean firstDrawDone = new AtomicBoolean(false);
   private final AtomicBoolean headlessAppStartCheckPending = new AtomicBoolean(false);