SimpleHistoryAdmin.history_view always use `AUTH_USER_MODEL` for generating the URL under "Changed By"

[epou]

Describe the bug
The SimpleHistoryAdmin.history_view assumes that the user model associated with the history_user is the one specified in AUTH_USER_MODEL, disregarding any class provided in the HistoricalRecords.user_model argument.

To Reproduce
[Taking the example from the docs: https://django-simple-history.readthedocs.io/en/latest/user_tracking.html#change-user-model]

models.py

from django.db import models
from simple_history.models import HistoricalRecords

class PollUser(models.Model):
    user_id = models.ForeignKey('auth.User')


# Only PollUsers should be modifying a Poll
class Poll(models.Model):
    question = models.CharField(max_length=200)
    pub_date = models.DateTimeField('date published')
    changed_by = models.ForeignKey(PollUser)
    history = HistoricalRecords(user_model=PollUser)

    @property
    def _history_user(self):
        return self.changed_by

    @_history_user.setter
    def _history_user(self, value):
        self.changed_by = value

admin.py

from simple_history.admin import SimpleHistoryAdmin
from .models import Poll

admin.site.register(Poll, SimpleHistoryAdmin)

1. Instantiate a new Poll object while specifying the user responsible for the modification.
2. Navigate to http://<HOSTNAME>/admin/<APP>/poll/<PK>/history/ (retrieve from reverse(f"admin:{obj._meta.app_label}_{obj._meta.model_name}_history", args=[quote(obj.pk)])).
3. Select the link under the "Changed By" column.
4. ISSUE: Redirects to the auth.user change URL instead of the appropriate admin URL for the PollUser

Expected behavior

Using the PollUser admin change URL (using the class provided in the HistoricalRecords.user_model args).