Refactor useDefaultStorageClass hook to use FetchState

[Gkrumbach07]

https://issues.redhat.com/browse/RHOAIENG-14219

Description

This PR refactors the useDefaultStorageClass hook to use the useFetchState utility, improving error handling and loading state management. The changes affect several components that use this hook, updating their implementations to handle the new return value format.

Key changes:

• Rewrote useDefaultStorageClass to use useFetchState
• Updated components using useDefaultStorageClass to destructure the new return value
• Added error handling and improved loading state management in SpawnerPage

How Has This Been Tested?

Navigate to the Spawner page and verify that the storage class selection works as expected.

1. Verify that the ManageStorageModal in the project details page still functions correctly.
2. Check the StorageClassSelect component to ensure it still displays the correct default storage class.
3. Test the application's behavior during the loading state of storage classes, ensuring no errors occur and the UI handles the loading state appropriately.
4. Verify that the SpawnerPage component sets default properly

Test Impact

fixes flaky test

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

Attention: Patch coverage is 92.59259% with 2 lines in your changes missing coverage. Please review.

Project coverage is 84.76%. Comparing base (25e1a44) to head (6f776e7).
Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
.../screens/spawner/storage/useDefaultStorageClass.ts	90.90%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3319      +/-   ##
==========================================
- Coverage   84.77%   84.76%   -0.01%     
==========================================
  Files        1309     1309              
  Lines       29292    29310      +18     
  Branches     7955     7977      +22     
==========================================
+ Hits        24831    24844      +13     
- Misses       4461     4466       +5     

Files with missing lines	Coverage Δ
.../notebookController/screens/server/SpawnerPage.tsx	65.21% <100.00%> (+0.21%)	⬆️
...ects/screens/detail/storage/ManageStorageModal.tsx	86.04% <100.00%> (ø)
...src/pages/projects/screens/spawner/SpawnerPage.tsx	98.07% <100.00%> (ø)
...cts/screens/spawner/storage/StorageClassSelect.tsx	93.18% <100.00%> (ø)
.../screens/spawner/storage/useDefaultStorageClass.ts	91.30% <90.90%> (-2.45%)	⬇️

... and 29 files with indirect coverage changes

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[pnaik1]

/lgtm
tested in the cluster

[Gkrumbach07]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Gkrumbach07

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