DYN-8941: dont crash when theres no cluster results

[chubakueno]

Purpose

Prevent crashes when theres no cluster results.

Declarations

Check these if you believe they are true

• Is documented according to the standards
• The level of testing this PR includes is appropriate
• User facing strings, if any, are extracted into *.resx files
• Snapshot of UI changes, if any.
• Changes to the API follow Semantic Versioning and are documented in the API Changes document.
• This PR modifies some build requirements and the readme is updated
• This PR contains no files larger than 50 MB
• This PR introduces new feature code involve network connecting and is tested with no-network mode.

Release Notes

Prevent crashes when theres no cluster results.

Reviewers

@BogdanZavu
@johnpierson

FYIs

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[github-actions]

See the ticket for this pull request: https://jira.autodesk.com/browse/DYN-8941

[johnpierson]

lgtm, we might need to add a task to have a textbox appear that says no results found or something similar to alert the user.

[Copilot]

Pull Request Overview

This PR ensures that the UI does not crash when there are no cluster results by adding a guard condition before processing cluster items.

• Added a guard to only run cluster-related code when comboboxResults contains items.
• Updated the logic that handles setting the SelectedIndex and adding a cluster result.

Comments suppressed due to low confidence (2)

src/NodeAutoCompleteViewExtension/ViewModels/NodeAutoCompleteBarViewModel.cs:1039

• Accessing QualifiedResults.First() without checking if QualifiedResults is non-empty could still cause a crash; consider adding a condition to ensure QualifiedResults contains at least one element.

var ClusterResultItem = QualifiedResults.First();

src/NodeAutoCompleteViewExtension/ViewModels/NodeAutoCompleteBarViewModel.cs:1039

• [nitpick] Consider renaming 'ClusterResultItem' to use camelCase (e.g., 'clusterResultItem') to follow C# naming conventions for local variables.

var ClusterResultItem = QualifiedResults.First();