Fix cuda device issues in closed_loop_botorch_only tutorial

[Balandat]

Resolves #2903 (comment)

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (4e6079f) to head (bd0d525).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #2906   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          212       212           
  Lines        19778     19778           
=========================================
  Hits         19778     19778           

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[facebook-github-bot]

@Balandat merged this pull request in d3d3c6f.