chore: add vscode-dotnet-runtime extension

[svor]

What does this PR do?

Adds ms-dotnettools.vscode-dotnet-runtime extension into the list of embedded extensions as it is required by the latest version of muhammad-sammy.csharp

Screenshot/screencast of this PR

What issues does this PR fix or reference?

eclipse-che/che#22470

How to test this PR?

Build the registry

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
• 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.

[github-actions]

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[openshift-ci]

@svor: The following tests 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/v10-plugins-test-pr-check	306acda	link	true	/test v10-plugins-test-pr-check
ci/prow/v10-images	306acda	link	true	/test v10-images

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: ibuziuk, svor

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