Make CAPTURE_VIDEO_OUTPUT privileged again

Restricting CAPTURE_VIDEO_OUTPUT permission in ag/4779804 preents the system from binding to RemoteDisplayProviders.
This breaks a legitimate use case of casting a device from Settings.
We temporarily soft revert the change pending a better solution.

Bug: 113371538
Test: Manually tested by casting to a Chrome Cast device.
Change-Id: If8f7fd775998d1b7bcdf9f72fe92cb86845f2044
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index 5258518..f845bd0 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -3345,7 +3345,7 @@
           @hide
           @removed -->
     <permission android:name="android.permission.CAPTURE_VIDEO_OUTPUT"
-        android:protectionLevel="signature" />
+        android:protectionLevel="signature|privileged" />
 
     <!-- Allows an application to capture secure video output.
          <p>Not for use by third-party applications.</p>