Change _lsr to _behavioral_response

[Mshuning]

Fixes #5258

[codecov]

Codecov Report

Attention: Patch coverage is 38.88889% with 11 lines in your changes missing coverage. Please review.

Project coverage is 99.00%. Comparing base (cb92a56) to head (07114d6).
Report is 130 commits behind head on master.

Files with missing lines	Patch %	Lines
...les/household/income/person/weekly_hours_worked.py	11.11%	8 Missing ⚠️
...ion/labor_supply_response/labor_supply_response.py	50.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5321      +/-   ##
==========================================
- Coverage   99.12%   99.00%   -0.13%     
==========================================
  Files        2592     2613      +21     
  Lines       37707    38068     +361     
  Branches      162      168       +6     
==========================================
+ Hits        37378    37689     +311     
- Misses        297      346      +49     
- Partials       32       33       +1     

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