[Django] #36390: Django 5.2.1 breaking for RemoteUserMiddleware subclasses that use process_request?

[Django]

#36390: Django 5.2.1 breaking for RemoteUserMiddleware subclasses that use
process_request?
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Reporter: shamoon | Type: Uncategorized
Status: new | Component: contrib.auth
Version: 5.2 | Severity: Normal
Keywords: | Triage Stage: Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Hello,

There were some async changes https://github.com/django/django/pull/18036
to middleware released in 5.2.1 but is this not a breaking change? Even
just the diff for `RemoteUserMiddleware` completely removes
`process_request` thereby breaking anything that depended on that:
https://github.com/django/django/pull/18036/files#diff-
0855f8c0e8b7fbb0ed4cd47469c9b75c9e8f3de04fd0415d92e05b7e682fbb1e

I didn't see it explicitly mentioned in the release notes and found it
quite a challenge to track down.

Apologies if I've missed something here.
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Ticket URL: <https://code.djangoproject.com/ticket/36390>
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