Make accelorators field not required on workbench spawner page and model deployment modals

[DaoDaoNoCode]

JIRA: https://issues.redhat.com/browse/RHOAIENG-12694

Description

Revert the changes made in https://github.com/opendatahub-io/odh-dashboard/pull/3102/files#diff-47693ad1cdd3bf50cbf06a60b941d5af0c9b0478f43311f7eca3e4f7d7972df8 to make the accelerator field non-required as discussed in https://redhat-internal.slack.com/archives/C07CQ4R4HMY/p1725973980856419?thread_ts=1725972888.178819&cid=C07CQ4R4HMY

How Has This Been Tested?

Verify both the workbench spawner page and model deployment modals, the accelerator field should not be required now.

Test Impact

N/A, one-liner fix on UX, not sure if it is worth the effort to detect the * symbol exists...

Request review criteria:

Self checklist (all need to be checked):

• The developer has manually tested the changes and verified that the changes work
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has added tests or explained why testing cannot be added (unit or cypress tests for related changes)

If you have UI changes:

• Included any necessary screenshots or gifs if it was a UI change.
• Included tags to the UX team if it was a UI/UX change.

After the PR is posted & before it merges:

• The developer has tested their solution on a cluster by using the image produced by the PR to main

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.29%. Comparing base (917b4af) to head (26a3499).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3181      +/-   ##
==========================================
+ Coverage   85.27%   85.29%   +0.02%     
==========================================
  Files        1258     1258              
  Lines       27689    27689              
  Branches     7372     7372              
==========================================
+ Hits        23611    23617       +6     
+ Misses       4078     4072       -6     

Files with missing lines	Coverage Δ
...r/screens/server/AcceleratorProfileSelectField.tsx	47.36% <ø> (ø)

... and 2 files with indirect coverage changes

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[mturley]

We still have the weirdness of "None" not actually being selectable (it works as a "clear selection" action) but that predates the change being reverted here so we can follow up for separate UX improvement there.

[openshift-ci]

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