Fix widget extraction for choosers in ListBlock

[tspnn]

Fixes #638

[codecov-commenter]

Codecov Report

Base: 91.75% // Head: 91.78% // Increases project coverage by +0.03% 🎉

Coverage data is based on head (6b592ed) compared to base (ffb3a6b).
Patch coverage: 83.33% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #639      +/-   ##
==========================================
+ Coverage   91.75%   91.78%   +0.03%     
==========================================
  Files          46       46              
  Lines        3976     3980       +4     
  Branches      602      603       +1     
==========================================
+ Hits         3648     3653       +5     
  Misses        194      194              
+ Partials      134      133       -1     

Impacted Files	Coverage Δ
wagtail_localize/views/edit_translation.py	85.32% <75.00%> (+0.23%)	⬆️
wagtail_localize/test/models.py	98.80% <100.00%> (+<0.01%)	⬆️

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[zerolab]

This LGTM. Thank you @Spikenn

[zerolab]

Will merge and make a patch release in about 3 or so hours (once I'm done with work)

[zerolab]

Sorted out the migration and merge in 0e6f02b and parents.

Thank you

[zerolab]

https://github.com/wagtail/wagtail-localize/releases/tag/v1.3.1