Fix: update Binder#getCallingUidOrWtf to use wtfStack

Change I11ea3fdf889689d76211506e81420e694238ee68 introduced
Binder#getCallingUidOrWtf.

It should have used Log.wtfStack instead of Log.wtf.  The stack trace is
important for diagnosing the origin of a given binder call.

Bug: 252975769
Test: TH
Change-Id: I6946b1aea536f4b662ffffe8024dbc54d3dc36e0

core/java/android/os/Binder.java

@@ -366,7 +366,7 @@ public class Binder implements IBinder {
      */
     public static final int getCallingUidOrWtf() {
         if (!isDirectlyHandlingTransaction() && !hasExplicitIdentity()) {
-            Log.wtf(TAG,
+            Log.wtfStack(TAG,
                     "Thread is not in a binder transaction, "
                             + "and the calling identity has not been "
                             + "explicitly set with clearCallingIdentity");