Further Wagtail 5.0 tidy ups

[zerolab]

Replaces #697

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.14 🎉

Comparison is base (fa7d253) 93.14% compared to head (ff0afe6) 93.29%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #699      +/-   ##
==========================================
+ Coverage   93.14%   93.29%   +0.14%     
==========================================
  Files          47       47              
  Lines        3912     3905       -7     
  Branches      581      579       -2     
==========================================
- Hits         3644     3643       -1     
+ Misses        157      152       -5     
+ Partials      111      110       -1     

Impacted Files	Coverage Δ
wagtail_localize/locales/views.py	97.22% <100.00%> (+3.84%)	⬆️
wagtail_localize/wagtail_hooks.py	89.86% <100.00%> (ø)

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