fix: Support for non-strict execution across all tasks

[rmitsch]

Description

Fixes processing by allowing None values from failed model requests across all tasks.

Related Issues

-

Changes Made

• Fixes None processing across all tasks.

Checklist

• [ ] Tests have been extended to cover changes in functionality
• Existing and new tests succeed
• Documentation updated (if applicable)
• Related issues linked

Screenshots/Examples (if applicable)

[codecov]

Codecov Report

❌ Patch coverage is 54.54545% with 10 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
sieves/engines/outlines_.py	0.00%	4 Missing ⚠️
sieves/tasks/predictive/ner/bridges.py	50.00%	3 Missing ⚠️
sieves/tasks/predictive/classification/bridges.py	66.66%	1 Missing ⚠️
...ves/tasks/predictive/question_answering/bridges.py	50.00%	1 Missing ⚠️
...ves/tasks/predictive/sentiment_analysis/bridges.py	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #196      +/-   ##
==========================================
- Coverage   92.86%   92.65%   -0.21%     
==========================================
  Files          63       63              
  Lines        3321     3336      +15     
==========================================
+ Hits         3084     3091       +7     
- Misses        237      245       +8     

Files with missing lines	Coverage Δ
sieves/serialization.py	98.85% <100.00%> (ø)
sieves/tasks/optimization/core.py	92.85% <100.00%> (+0.17%)	⬆️
sieves/tasks/predictive/pii_masking/bridges.py	98.61% <100.00%> (ø)
sieves/tasks/predictive/classification/bridges.py	88.06% <66.66%> (-0.32%)	⬇️
...ves/tasks/predictive/question_answering/bridges.py	99.15% <50.00%> (-0.85%)	⬇️
...ves/tasks/predictive/sentiment_analysis/bridges.py	99.13% <66.66%> (-0.87%)	⬇️
sieves/tasks/predictive/ner/bridges.py	93.60% <50.00%> (-1.08%)	⬇️
sieves/engines/outlines_.py	76.59% <0.00%> (-3.41%)	⬇️

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