chore: fix slices and maps merge test

[amandavialva01]

Ticket

CM-571

Description

fix slices and maps merge test. Change slice equality check method

Test Plan

CI passes.

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

[netlify]

✅ Deploy Preview for determined-ui canceled.

Name	Link
🔨 Latest commit	b92a9c9
🔍 Latest deploy log	https://app.netlify.com/sites/determined-ui/deploys/670edead75f0650008b29574

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 54.40%. Comparing base (2ef2f12) to head (b92a9c9).
Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #10063      +/-   ##
==========================================
- Coverage   54.42%   54.40%   -0.02%     
==========================================
  Files        1262     1262              
  Lines      158880   158880              
  Branches     3631     3631              
==========================================
- Hits        86463    86444      -19     
- Misses      72283    72302      +19     
  Partials      134      134              

Flag	Coverage Δ
backend	45.46% <ø> (-0.04%)	⬇️
harness	72.74% <ø> (ø)
web	53.95% <ø> (ø)

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

see 7 files with indirect coverage changes