fix: DEV-3764: Fix CSV export download with non-existing columns

[KonstantinKorotaev]

No description provided.

[swarmia]

✅  Linked to Bug DEV-3764 · Can't download CSV export with non-existing columns

[niklub]

Make it green

[codecov]

Codecov Report

Base: 77.80% // Head: 77.08% // Decreases project coverage by -0.71% ⚠️

Coverage data is based on head (75a09ad) compared to base (17b40da).
Patch has no changes to coverable lines.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3263      +/-   ##
===========================================
- Coverage    77.80%   77.08%   -0.72%     
===========================================
  Files          137      148      +11     
  Lines         9951    10930     +979     
===========================================
+ Hits          7742     8425     +683     
- Misses        2209     2505     +296     

Impacted Files	Coverage Δ
label_studio/label_studio/core/mixins.py	0.00% <0.00%> (-100.00%)	⬇️
label_studio/label_studio/users/mixins.py	75.00% <0.00%> (-12.50%)	⬇️
...bel_studio/label_studio/organizations/functions.py	66.66% <0.00%> (-10.26%)	⬇️
...tudio/label_studio/projects/functions/next_task.py	75.97% <0.00%> (-8.59%)	⬇️
label_studio/label_studio/ml/api.py	83.69% <0.00%> (-6.85%)	⬇️
...l_studio/label_studio/core/templatetags/filters.py	48.75% <0.00%> (-6.20%)	⬇️
label_studio/label_studio/core/redis.py	38.38% <0.00%> (-5.69%)	⬇️
..._studio/label_studio/core/settings/label_studio.py	94.59% <0.00%> (-5.41%)	⬇️
label_studio/label_studio/organizations/api.py	79.04% <0.00%> (-5.33%)	⬇️
.../label_studio/data_manager/actions/experimental.py	14.79% <0.00%> (-4.72%)	⬇️
... and 79 more

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