Use clean calling identity to clear preferred activities

In some cases we need to clear preferred activities for all users after
changing mimeGroups via PackageManager#setMimeGroup. This can result in
clearing preferred activities for non-current user. Which will cause
SecurityException if done without using clean calling identity.

Test: multiple users on device; atest CtsDynamicMimeHostTestCases
Bug: 161239297
Change-Id: I0a84702526ea5ab110aa44056d0407d106d079e3

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

@@ -25539,7 +25539,8 @@ public class PackageManagerService extends IPackageManager.Stub
 
     private void applyMimeGroupChanges(String packageName, String mimeGroup) {
         if (mComponentResolver.updateMimeGroup(packageName, mimeGroup)) {
-            clearPackagePreferredActivities(packageName, UserHandle.USER_ALL);
+            Binder.withCleanCallingIdentity(() ->
+                    clearPackagePreferredActivities(packageName, UserHandle.USER_ALL));
         }
 
         mPmInternal.writeSettings(false);