fix: prevent hyperparameter search modal submitting the same request multiple times

[keita-determined]

Ticket

ET-119

Description

Disable “Run Experiment” button when clicked once and still running submitExperiment

Test Plan

• Check if “Run Experiment” button is disabled and loading in hyperparameter search modal when clicked once and still running submitExperiment, so user cannot submit the same hyperparameter search multiple times.

Checklist

• Changes have been manually QA'd
• New features have been approved by the corresponding PM
• User-facing API changes have the "User-facing API Change" label
• Release notes have been added as a separate file under docs/release-notes/
  See Release Note for details.
• Licenses have been included for new code which was copied and/or modified from any external code

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 50.56%. Comparing base (ad5fe5a) to head (661286f).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9883      +/-   ##
==========================================
- Coverage   54.69%   50.56%   -4.14%     
==========================================
  Files        1261      938     -323     
  Lines      156699   127323   -29376     
  Branches     3596     3596              
==========================================
- Hits        85712    64378   -21334     
+ Misses      70856    62814    -8042     
  Partials      131      131              

Flag	Coverage Δ
harness	?
web	54.45% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...react/src/components/HyperparameterSearchModal.tsx	90.52% <100.00%> (ø)

... and 323 files with indirect coverage changes

[EmilyBonar]

Makes sense!