chore: LEAP-191: mark blueprints internal

[robot-ci-heartex]

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

• chore: LEAP-191: mark blueprints internal label-studio-sdk#610

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.86%. Comparing base (8f4128d) to head (e46a510).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@             Coverage Diff              @@
##           develop    #8492       +/-   ##
============================================
+ Coverage    36.32%   79.86%   +43.54%     
============================================
  Files          720      237      -483     
  Lines        54448    21173    -33275     
  Branches      9067        0     -9067     
============================================
- Hits         19776    16909     -2867     
+ Misses       34669     4264    -30405     
+ Partials         3        0        -3     

Flag	Coverage Δ
lsf-unit	?
pytests	79.86% <ø> (ø)

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