ci: extend experiment timeout for slurm test

[MikhailKardash]

Ticket

None

Description

Slurm restart fails on main because the underlying trials time out due to image pull. This PR does 2 things:

1. Bypasses top-level config for trial timeout in the affected test to wait for image pulls.
2. Adds the affected test suite to be testable on feature branches.

Test Plan

CI passes, specifically: test-e2e-slurm-restart

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	cb3eda3
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 51.64%. Comparing base (2dc59ca) to head (cb3eda3).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #9601   +/-   ##
=======================================
  Coverage   51.63%   51.64%           
=======================================
  Files        1255     1255           
  Lines      152631   152631           
  Branches     3092     3091    -1     
=======================================
+ Hits        78815    78820    +5     
+ Misses      73659    73654    -5     
  Partials      157      157           

Flag	Coverage Δ
backend	43.96% <ø> (+<0.01%)	⬆️
harness	72.76% <ø> (ø)
web	48.63% <ø> (ø)

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

see 2 files with indirect coverage changes

[jgongd]

LGTM!

[carolinaecalderon]

LGTM, but let @NicholasBlaskey know what you've decided on about "skipping the collect logs step as we do for test-e2e-managed-devcluster". If you include that in this PR, it could fix the failing CI