[Test] Stabilize DevConsole import-from-git step with URL fallback

[SkorikSergey]

What does this PR do?

The import page navigation can be flaky depending on OpenShift console behavior and routing. Using a direct fallback URL makes the test more reliable across environments.

• Stabilizes the DevConsole integration flow for “Import from Git” by adding a deterministic fallback URL for the target project namespace.
• Builds the OpenShift console URL from the existing test base URL and composes /import/ns/{projectName}.
• Updates the test step to use openImportFromGitPageWithFallback(importProjectUrl) instead of relying only on UI navigation.

Screenshot/screencast of this PR

What issues does this PR fix or reference?

https://redhat.atlassian.net/browse/CRW-9944

How to test this PR?

• Run DevConsoleIntegration.spec.ts in the target environment.
• Verify the “Open import from git project page” step consistently reaches the import page.
• Confirm the rest of the flow (fill and submit import data) passes unchanged.

PR Checklist

As the author of this Pull Request I made sure that:

• The Eclipse Contributor Agreement is valid
• Code produced is complete
• Code builds without errors
• Tests are covering the bugfix or new feature
• The repository devfile is up to date and works
• Sections What issues does this PR fix or reference and How to test this PR completed
• Relevant user documentation updated
• Relevant contributing documentation updated
• CI/CD changes implemented, documented and communicated

Reviewers

Reviewers, please comment how you tested the PR when approving it.

[dmytro-ndp]

I ran test against DS 3.28.0 successfully.

PR looks good to merge.