Fix permission check for unbundled sharesheet

Only the calling appId should be compared, not the full uid.

Fix: 269106787
Change-Id: I29cd9644a872d1db3eedb6db1fdc3fa6f4dc072b

services/core/java/com/android/server/pm/ShortcutService.java

@@ -1641,7 +1641,7 @@ public class ShortcutService extends IShortcutService.Stub {
             return false;
         }
         int uid = injectGetPackageUid(systemChooser.getPackageName(), UserHandle.USER_SYSTEM);
-        return uid == callingUid;
+        return UserHandle.getAppId(uid) == UserHandle.getAppId(callingUid);
     }
 
     private void enforceSystemOrShell() {