test: Use QuerySetAny alias for QuerySet type checks

[jennifer-richards]

Fixes failing test in #5700

QuerySetAny is an alias for QuerySet that works some magic to satisfy the type checker. Other than during type checking, it's the same as QuerySet.

[codecov]

Codecov Report

Merging #5722 (8cd09ab) into feat/django4 (4012a21) will decrease coverage by 0.02%.
The diff coverage is 88.00%.

@@               Coverage Diff                @@
##           feat/django4    #5722      +/-   ##
================================================
- Coverage         88.74%   88.72%   -0.02%     
================================================
  Files               287      287              
  Lines             39876    39889      +13     
================================================
+ Hits              35387    35392       +5     
- Misses             4489     4497       +8     

Impacted Files	Coverage Δ
ietf/meeting/forms.py	97.03% <ø> (ø)
ietf/doc/utils.py	87.13% <62.50%> (-0.17%)	⬇️
ietf/doc/feeds.py	75.63% <100.00%> (ø)
ietf/doc/models.py	88.87% <100.00%> (+0.03%)	⬆️
ietf/meeting/models.py	86.35% <100.00%> (+0.04%)	⬆️
ietf/nomcom/utils.py	91.30% <100.00%> (ø)
ietf/submit/utils.py	90.15% <100.00%> (+0.01%)	⬆️

... and 3 files with indirect coverage changes