fix(replay): Ignore foreground before registration

A foreground callback can run before ReplayIntegration registers and initializes its options. Ignore lifecycle callbacks until the integration is enabled to avoid crashing during SDK initialization.

Refs JAVA-325
Co-Authored-By: Codex <noreply@openai.com>

Author: romtsn

sentry-android-replay/src/main/java/io/sentry/android/replay/ReplayIntegration.kt

@@ -168,6 +168,9 @@ public class ReplayIntegration(
 
   override fun onAppForegrounded(startNewSession: Boolean) {
     enqueueOnMainThread {
+      if (!isEnabled.get()) {
+        return@enqueueOnMainThread
+      }
       if (startNewSession) {
         val isFullSession = sample(options.sessionReplay.sessionSampleRate)
         if (!isFullSession && !options.sessionReplay.isSessionReplayForErrorsEnabled) {

sentry-android-replay/src/test/java/io/sentry/android/replay/ReplayIntegrationTest.kt

@@ -225,6 +225,15 @@ class ReplayIntegrationTest {
     verify(captureStrategy, never()).start(any(), any(), anyOrNull())
   }
 
+  @Test
+  fun `foreground before register does nothing`() {
+    val replay = fixture.getSut(context)
+
+    replay.onAppForegrounded(true)
+
+    assertThat(replay.isRecording).isFalse()
+  }
+
   @Test
   fun `start sets isRecording to true`() {
     val captureStrategy = mock<CaptureStrategy>()