Add real calling package name to log.

To identyify the sender app that needs to be fixed we need the real
calling package, not the calling package.

Test: atest BackgroundActivityLaunchTest
Change-Id: I7c970d8d43e5e980e95f290cf2bdf1bab4020472
Bug: 236231785

services/core/java/com/android/server/wm/BackgroundActivityStartController.java

@@ -452,6 +452,9 @@ public class BackgroundActivityStartController {
         // If we are here, it means all exemptions not based on PI sender failed, so we'll block
         // unless resultIfPiSenderAllowsBal is an allow and the PI sender allows BAL
 
+        String realCallingPackage = callingUid == realCallingUid ? callingPackage :
+                mService.mContext.getPackageManager().getNameForUid(realCallingUid);
+
         String stateDumpLog = " [callingPackage: " + callingPackage
                 + "; callingUid: " + callingUid
                 + "; appSwitchState: " + appSwitchState
@@ -460,6 +463,7 @@ public class BackgroundActivityStartController {
                         ActivityManager.class, "PROCESS_STATE_", callingUidProcState)
                 + "; isCallingUidPersistentSystemProcess: " + isCallingUidPersistentSystemProcess
                 + "; balAllowedByPiSender: " + balAllowedByPiSender
+                + "; realCallingPackage: " + realCallingPackage
                 + "; realCallingUid: " + realCallingUid
                 + "; realCallingUidHasAnyVisibleWindow: " + realCallingUidHasAnyVisibleWindow
                 + "; realCallingUidProcState: " + DebugUtils.valueToString(