FIX / Handle group assignment on uninstall templates

[Mary-Clb]

• I have performed a self-review of my code.
• I have added tests (when available) that prove my fix is effective or that my feature works.
• I have updated the CHANGELOG with a short functional description of the fix or new feature.
• This change requires a documentation update.

Description

• It fixes !43139
• Group assignment was not working due to a change on GLPI : the plugin now also supports items using GLPI's assignable group handling, instead of depending only on the legacy field detection.

[Rom1-B]

Can you test this?

Suggested change

	$can_update_groups = $item->isField('groups_id') || method_exists($item, 'prepareGroupFields');
	if ($can_update_groups) {
	if (
	$item->isField('groups_id') ||
	($item instanceof AssignableItemInterface)
	) {

Then have the customer validate the patch?

[Mary-Clb]

Waiting for customer approval