Update AssignableItem.php

[bacus99]

Thanks to Phind AI :)

Since my migration to GLPI11, I have random error in APPLIANCE view when a computer was associated

*** Uncaught PHP Exception TypeError: "array_intersect(): Argument #1 ($array) must be of type array, int given" at AssignableItem.php line 63
Backtrace :
./src/Glpi/Features/AssignableItem.php:63
./src/Glpi/Features/AssignableItem.php:63 array_intersect()
./src/CommonDBTM.php:2986 Appliance->canViewItem()
./src/CommonDBTM.php:1486 CommonDBTM->can()
./src/Appliance_Item.php:285 CommonDBTM->getLink()
./src/Appliance_Item.php:100 Appliance_Item::showForItem()
./src/CommonGLPI.php:694 Appliance_Item::displayTabContentForItem()
./ajax/common.tabs.php:108 CommonGLPI::displayStandardTab()
...Glpi/Controller/LegacyFileLoadController.php:64 require()
./vendor/symfony/http-kernel/HttpKernel.php:181 Glpi\Controller\LegacyFileLoadController->__invoke()
./vendor/symfony/http-kernel/HttpKernel.php:76 Symfony\Component\HttpKernel\HttpKernel->handleRaw()
./vendor/symfony/http-kernel/Kernel.php:197 Symfony\Component\HttpKernel\HttpKernel->handle()
./public/index.php:70 Symfony\Component\HttpKernel\Kernel->handle()

message was clear as an array was expected, but an INT was provided.

This fix the vew issue

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