change: Add test to check classical indices used in measurement are preserved between Circuit and OpenQASM Translations.

[Altanali]

Issue #, if available:

Description of changes:
Add a unit test to check that classical register indices supplied during qubit measurements are preserved when translating to and from Braket Circuits and OpenQASM 3.0.

Testing done:

Merge Checklist

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General

• I have read the CONTRIBUTING doc
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Tests

• I have added tests that prove my fix is effective or that my feature works (if appropriate)
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (785d251) to head (f19b73a).
Report is 35 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #1013   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files          135       135           
  Lines         8948      8948           
  Branches      2010      2010           
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  Hits          8948      8948           

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