Clear identity when releasing display resources.

We already do this in `close()` but not in `onVirtualDisplayRemoved()`.
This causes a security exception due to missing `WAKE_LOCK` permission
on builds that use HSUM.

Fix: 286185979
Test: presubmit
Change-Id: Iebbb04f6223d465beb1fbfe0f28d3a96e4304db3
Merged-In: I40447a461409fb523be3932d67b1fc6f0843e9e9

services/companion/java/com/android/server/companion/virtual/VirtualDeviceImpl.java

@@ -987,8 +987,12 @@ final class VirtualDeviceImpl extends IVirtualDevice.Stub
                     "Virtual device doesn't have a virtual display with ID " + displayId);
         }
 
-        releaseOwnedVirtualDisplayResources(virtualDisplayWrapper);
-
+        final long ident = Binder.clearCallingIdentity();
+        try {
+            releaseOwnedVirtualDisplayResources(virtualDisplayWrapper);
+        } finally {
+            Binder.restoreCallingIdentity(ident);
+        }
     }
 
     /**