per batch feedback Update train_mu_controller.py

[smilesun]

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 71.42857% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.49%. Comparing base (5a67544) to head (529a055).
⚠️ Report is 980 commits behind head on fbopt.

Files with missing lines	Patch %	Lines
domainlab/algos/trainers/train_fbopt_b.py	50.00%	2 Missing ⚠️

Additional details and impacted files

@@ Coverage Diff @@## fbopt #531 +/- ##
==========================================
- Coverage 93.74% 91.49% -2.25% 
==========================================
Files 138 138 Lines 5320 5326 +6 ==========================================
- Hits 4987 4873 -114 - Misses 333 453 +120 

Flag	Coverage Δ
unittests	91.49% <71.42%> (-2.25%)	⬇️

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