fix(replay): Post checkCanRecord to main thread to prevent deadlock

onScreenshotRecorded can run on the replay executor thread (PixelCopy
masked-capture and emit paths). checkCanRecord -> pauseInternal acquires
lifecycleLock — if another thread holds that lock and submits to the
same single-threaded executor, we deadlock.

Post checkCanRecord to the main looper so it never runs on the executor.

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

Author: romtsn

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

@@ -352,7 +352,11 @@ public class ReplayIntegration(
       }
       addFrame(bitmap, frameTimeStamp, screen)
     }
-    checkCanRecord()
+    // Post to the main thread: onScreenshotRecorded can run on the replay executor
+    // (PixelCopy masked-capture and emit paths), and checkCanRecord -> pauseInternal
+    // acquires lifecycleLock — if another thread holds that lock while submitting to
+    // the same executor, we deadlock.
+    mainLooperHandler.post { checkCanRecord() }
   }
 
   override fun onScreenshotRecorded(screenshot: File, frameTimestamp: Long) {
@@ -375,7 +379,7 @@ public class ReplayIntegration(
       }
       addFrame(screenshot, frameTimestamp, screen)
     }
-    checkCanRecord()
+    mainLooperHandler.post { checkCanRecord() }
   }
 
   override fun close() {

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

@@ -4,6 +4,7 @@ import android.content.Context
 import android.graphics.Bitmap
 import android.graphics.Bitmap.CompressFormat.JPEG
 import android.graphics.Bitmap.Config.ARGB_8888
+import android.os.Looper
 import androidx.test.core.app.ApplicationProvider
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import io.sentry.Breadcrumb
@@ -73,6 +74,7 @@ import org.mockito.kotlin.reset
 import org.mockito.kotlin.times
 import org.mockito.kotlin.verify
 import org.mockito.kotlin.whenever
+import org.robolectric.Shadows.shadowOf
 import org.robolectric.annotation.Config
 
 @RunWith(AndroidJUnit4::class)
@@ -647,6 +649,7 @@ class ReplayIntegrationTest {
     replay.register(fixture.scopes, fixture.options)
     replay.start()
     replay.onScreenshotRecorded(mock<Bitmap>())
+    shadowOf(Looper.getMainLooper()).idle()
 
     verify(recorder).pause()
   }