16315 - Cant filter changelog by object type (no results found)

[Julio-Oliveira-Encora]

Fixes: #16315

Replaced /api/extras/content-types/ with /api/extras/object-types/ for JournalEntryFilterForm and ObjectChangeFilterForm.

[jeremystretch]

Ideally we don't want to return an unfiltered list of object types. Instead, we can change these fields to instances of ContentTypeMultipleChoiceField; see CustomLinkFilterForm for an example:

netbox/netbox/extras/forms/filtersets.py

Lines 114 to 118 in fdad59c

	object_type = ContentTypeMultipleChoiceField(
	label=_('Object types'),
	queryset=ObjectType.objects.with_feature('custom_links'),
	required=False
	)