LocationService->loadLocationChildren throws an exception, sometimes, when I attempt to load children from a location where content has been deleted and re-inserted.

steps to reproduce:

• Import the code below as a new command to execute later
• Create 3 folders at the root node: folder A, folder B, folder C
• Add a secondary location of folder C inside folder A
• Add a secondary location of folder B inside folder A
• execute the command => output 2
• Delete the secondary location of folder B that is in folder A
• execute the command => output 1
• Add a secondary location of folder B inside folder A
• execute the command => failure
  => Expected result: 2 nodes should be counted
  => Actual result: Raised exception: Could not find 'location' with identifier '142'

  $userId = 10;
  $nodeId = <folderA-nodeId>;
  $repository = $this->getContainer()->get( 'ezpublish.api.repository' );
  $repository->setCurrentUser( $repository->getUserService()->loadUser( $userId) );
  $locationService = $repository->getLocationService();
  $rootLocation = $locationService->loadLocation( $nodeId ); 

  $allItems = $locationService->loadLocationChildren( $rootLocation );
  $output->writeln( "loadLocationChildren" );
//  $output->writeln( print_r( $allItems, true ) );
  $output->writeln( count( $allItems );