chore: Don't request workspace if user namespace is not created

[tolusha]

Signed-off-by: Anatolii Bazko [email protected]

What does this PR do?

• Don't request workspace if user namespace is not created
• Update error message if user tries to start a workspace when namespace is not created

What issues does this PR fix or reference?

eclipse-che/che#21582

Is it tested? How?

N/A

Release Notes

N/A

Docs PR

N/A

[che-bot]

Click here to review and test in web IDE:

[che-bot]

Click here to review and test in web IDE:

[github-actions]

Docker image build succeeded: quay.io/eclipse/che-dashboard:pr-619

[tolusha]

/test v8-dashboard-happy-path

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: akurinnoy, olexii4, tolusha

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[openshift-ci]

New changes are detected. LGTM label has been removed.

[che-bot]

Click here to review and test in web IDE:

[github-actions]

Docker image build succeeded: quay.io/eclipse/che-dashboard:pr-619

[openshift-ci]

@tolusha: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/v8-dashboard-happy-path	727cee0	link	true	/test v8-dashboard-happy-path

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