fix(core): Read replayId from controller instead of scope

The scope passed to captureEvent can be a clone (when using
ScopeCallback), which misses the replayId set by captureReplay()
on the live scope. Read from ReplayController.getReplayId() instead.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: romtsn

sentry/src/main/java/io/sentry/SentryClient.java

@@ -250,15 +250,13 @@ private boolean shouldApplyScopeData(final @NotNull CheckIn event, final @NotNul
       }
       if (shouldCaptureReplay) {
         options.getReplayController().captureReplay(event.isCrashed());
-        if (scope != null) {
-          final @Nullable SentryId replayId = scope.getReplayId();
-          if (replayId != null && !replayId.equals(SentryId.EMPTY_ID)) {
-            final @Nullable ITransaction transaction = scope.getTransaction();
-            if (transaction != null) {
-              final @Nullable Baggage baggage = transaction.getSpanContext().getBaggage();
-              if (baggage != null) {
-                baggage.forceSetReplayId(replayId);
-              }
+        final @NotNull SentryId replayId = options.getReplayController().getReplayId();
+        if (!replayId.equals(SentryId.EMPTY_ID) && scope != null) {
+          final @Nullable ITransaction transaction = scope.getTransaction();
+          if (transaction != null) {
+            final @Nullable Baggage baggage = transaction.getSpanContext().getBaggage();
+            if (baggage != null) {
+              baggage.forceSetReplayId(replayId);
             }
           }
         }

sentry/src/test/java/io/sentry/SentryClientTest.kt

@@ -3291,6 +3291,8 @@ class SentryClientTest {
     fixture.sentryOptions.setReplayController(
       object : ReplayController by NoOpReplayController.getInstance() {
         override fun captureReplay(isTerminating: Boolean?) {}
+
+        override fun getReplayId(): SentryId = replayId
       }
     )
     val sut = fixture.getSut()