Move the SceneTransitionLayout demo to development/samples/ (3/3)

Bug: 350663468
Test: Built the app using both Gradle and Soong
Flag: EXEMPT demo app
Change-Id: I9fee725f2e71ffd14d30102a6b8b280dd4bbae85
diff --git a/packages/SystemUI/Android.bp b/packages/SystemUI/Android.bp
index b5776e2..469b9ce 100644
--- a/packages/SystemUI/Android.bp
+++ b/packages/SystemUI/Android.bp
@@ -23,7 +23,10 @@
 // See: http://go/android-license-faq
 license {
     name: "frameworks_base_packages_SystemUI_license",
-    visibility: [":__subpackages__"],
+    visibility: [
+        ":__subpackages__",
+        "//development/samples/SceneTransitionLayoutDemo:__subpackages__",
+    ],
     license_kinds: [
         "SPDX-license-identifier-Apache-2.0",
     ],