While deferring many-to-many and GFK has no effect, the previous
implementation of QuerySet.defer() ignore them instead of crashing.
Regression in b3db6c8dcb5145f7d45eff517bcd96460475c879.
Thanks Paco Martínez for the report.
Backport of 99e5dff737cd20b12d060e4794e097063b61ec40 from main
Regression in 09ffc5c1212d4ced58b708cbbf3dfbfb77b782ca.
Thanks Michael Smith for the report.
This also reverts commit 1e4da439556cdd69eb9f91e07f99cf77997e70d2.
Backport of 1586a09b7949bbb7b0d84cb74ce1cadc25cbb355 from main