Correct URL resolution for plugin models using journal entries

[jeremystretch]

NetBox version

v3.2.0-beta1

Python version

3.8

Steps to Reproduce

1. Enable ObjectJournalView for a plugin model. For example:

    path("my-model/<int:pk>/journal/", ObjectJournalView.as_view(), name="mymodel_journal", kwargs={"model": MyModel}),

2. Create a journal entry for an instance of that model.

(This bug was originally reported by @peteeckel under WG8333.)

Expected Behavior

The JournalEntry should be created and the user should be redirected to the object's journal view.

Observed Behavior

The JournalEntry object is created, however an exception is then raised:

<class 'django.urls.exceptions.NoReverseMatch'>

'netbox_dns' is not a registered namespace

Python version: 3.8.11
NetBox version: 3.2.0-beta1