fix: request devfile JSON schema

[akurinnoy]

What does this PR do?

This PR fixes the issue that the dashboard is not able ot fetch a devfile schema.

What issues does this PR fix or reference?

fixes eclipse-che/che#20919

Is it tested? How?

Use the dashboard image from this PR

[codecov]

Codecov Report

Merging #424 (78b1507) into main (d1462c8) will increase coverage by 0.00%.
The diff coverage is 50.00%.

@@           Coverage Diff           @@
##             main     #424   +/-   ##
=======================================
  Coverage   49.60%   49.61%           
=======================================
  Files         211      211           
  Lines        7243     7242    -1     
  Branches     1199     1199           
=======================================
  Hits         3593     3593           
+ Misses       3309     3308    -1     
  Partials      341      341           

Impacted Files	Coverage Δ
...oard-frontend/src/store/DevfileRegistries/index.ts	25.27% <25.00%> (+0.27%)	⬆️
...e/DevfileRegistries/fetchAndUpdateDevfileSchema.ts	83.33% <100.00%> (ø)

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[github-actions]

Docker image build succeeded: quay.io/eclipse/che-dashboard:pr-424

[benoitf]

Tested using the image and I don't reproduce the error

Also I'm able to start DevWorkspaces

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: akurinnoy, benoitf, ibuziuk

The full list of commands accepted by this bot can be found here.

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[che-bot]

✅ E2E dashboard tests succeed 🎉

See Details

• Jenkins job

• test report

• logs and configs

• Che dashboard image:quay.io/crw_pr/che-dashboard:424

• Che server image: quay.io/crw_pr/che-server:424

Test product:

• tested with Eclipse Che on K8S (minikube v1.22.0)
• E2E test scenario
• E2E test pipeline source code

• Use comment "[dashboard-ci-test]" to rerun the dashboard e2e tests

Eclipse Che QE channel: https://mattermost.eclipse.org/eclipse/channels/eclipse-che-qe