add argument_type_whitelist parameter to RETextClassificationWithIndicesTaskModule

[RainbowRivey]

Adds argument_type_whitelist: List[List[str]] parameter used by _add_candidate_relations().

This allows adding candidates only of pre-defined argument type pairs.
E.g. when argument_type_whitelist=[['ORG','PER']] only relations with head.label='ORG' and tail.label='PER' will be added.

TODO:

• test in downstream setup (e.g. runs with 3 seeds at drugprot)

metric	baseline	with whitelist
quality (micro f1)	0.7597 (±0.0037)	0.7737 (±0.0042)
Inference time	83.56	13.5 (±0.3)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.51%. Comparing base (afcf7d4) to head (ac964bd).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #152      +/-   ##
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+ Coverage   95.49%   95.51%   +0.01%     
==========================================
  Files          61       61              
  Lines        5195     5212      +17     
==========================================
+ Hits         4961     4978      +17     
  Misses        234      234              

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[ArneBinder]

Main code looks good, but please simplify the test.

[ArneBinder]

still hard to verify, see below

[ArneBinder]

looks good, thanks!