Problem description: the following error is observed when opening template item prototypes mass update form:

Undefined index: interfaces [disc_prototypes.php:1485 → CView->getOutput() → include() in include/views/configuration.item.prototype.massupdate.php:543]
Invalid argument supplied for foreach() [disc_prototypes.php:1485 → CView->getOutput() → include() in include/views/configuration.item.prototype.massupdate.php:543]

Steps to reproduce:

1. Open any template that has a discovery rule with item prototypes
2. Open the list of item prototypes
3. Select a couple of item prototypes and press "Mass update" button

Result:
The following error is observed:

Expected:
No errors should be observed