Don't clip the dialog contents so shadows aren't clipped

Fixes: 363027803

The Compose content was clipped, clipping the shadow. This removes
the child clipping from the containing FrameLayout.

Test: ran DialogScreenShotTest
Change-Id: I4cf2076cca5537a314d677edf4c49ee16f417fbb
diff --git a/compose/ui/ui/src/androidMain/kotlin/androidx/compose/ui/window/AndroidDialog.android.kt b/compose/ui/ui/src/androidMain/kotlin/androidx/compose/ui/window/AndroidDialog.android.kt
index cdf731a..0e07822 100644
--- a/compose/ui/ui/src/androidMain/kotlin/androidx/compose/ui/window/AndroidDialog.android.kt
+++ b/compose/ui/ui/src/androidMain/kotlin/androidx/compose/ui/window/AndroidDialog.android.kt
@@ -344,6 +344,7 @@
                 )
                 .also { it.gravity = Gravity.CENTER }
         )
+        frameLayout.clipChildren = false
         ViewCompat.setOnApplyWindowInsetsListener(frameLayout, this)
         ViewCompat.setWindowInsetsAnimationCallback(
             frameLayout,