Remove provider specification from Jupyter app manifest

[Gkrumbach07]

https://issues.redhat.com/browse/RHOAIENG-25601

Description

Sets the provider of the 'Start basic workbench' tile to an empty string. It cannot be fully removed as the CRD requires that value. Our code does a check for a defined value there so it will act as undefined when rendered.

How Has This Been Tested?

go to explore section and make sure 'by Jupyter' is gone

Test Impact

none - microcopy

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 82.63%. Comparing base (e05969f) to head (43ca038).
Report is 50 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4280      +/-   ##
==========================================
- Coverage   82.68%   82.63%   -0.06%     
==========================================
  Files        1653     1663      +10     
  Lines       34891    35105     +214     
  Branches    10329    10360      +31     
==========================================
+ Hits        28850    29008     +158     
- Misses       6041     6097      +56     

see 164 files with indirect coverage changes

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[srtanish1992]

Tested manually and the change is working as expected.

[srtanish1992]

/lgtm

[DaoDaoNoCode]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

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