Refs #23947 -- Prevented staticfiles tests from having side effects.
Fixed incorrect filter name in docs/topics/i18n/translation.txt.
Fixed #23956 -- Fixed migration creation for multiple table inheritance
Fixed typo in admin deprecation message.
Fixed #23977 -- Added setdefault() method to HttpResponse
Appeased spell checker.
Fixed #23975 -- Sent pre_migrate signal if all apps have migrations.

Thanks kmmbvnr for the report.