feat: BROS-670: Prompts support for CustomInterface

[robot-ci-heartex]

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Please ensure that all linked upstream Pull Requests are merged before proceeding with this one.

• feat: BROS-670: Prompts support for CustomInterface label-studio-sdk#693

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.43%. Comparing base (467dbbe) to head (c787cbc).
⚠️ Report is 1 commits behind head on develop.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@             Coverage Diff              @@
##           develop    #8988       +/-   ##
============================================
+ Coverage    66.65%   81.43%   +14.77%     
============================================
  Files          829      267      -562     
  Lines        64782    24206    -40576     
  Branches     10990        0    -10990     
============================================
- Hits         43183    19713    -23470     
+ Misses       21595     4493    -17102     
+ Partials         4        0        -4     

Flag	Coverage Δ
lsf-e2e	?
lsf-integration	?
lsf-unit	?
pytests	81.43% <ø> (ø)

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