chore: add constants in node view, lint and format

[harbournick]

No description provided.

[Copilot]

Pull Request Overview

This PR adds constants for improved code maintainability, applies linting fixes, and performs code formatting. The changes focus on replacing magic numbers and strings with named constants and cleaning up unused variables.

• Extracts magic numbers and default values into named constants for better readability
• Removes unused variable declaration to clean up code
• Simplifies error handling by removing unused error parameter

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
ListItemNodeView.js	Adds constants for font conversion factor and default values, improves marker width calculation function
runNodeImporter.js	Removes unused attributes variable from destructuring assignment

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