fix(vscode): allow undoing clicking of lineage columns

[benfdking]

• when you click a column in the lineage it allows it to show that
  columns lineage
• this fixes a bug where unclicking it didn't work
• introduces Column domain type to start shoring up things

[Copilot]

Pull Request Overview

Implements toggling of lineage column selection in the VS Code React UI by mapping API columns to a domain model and enabling dynamic disable state.

• Adds a Column domain type and a fromAPIColumn mapper
• Updates graph context and components to consume the new domain Column
• Refactors ModelNode to map API columns and push missing ones; refactors ModelColumns to use a dynamic disabled prop

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
vscode/react/src/domain/column.ts	Introduce Column type and fromAPIColumn mapper
vscode/react/src/components/graph/context.tsx	Swap API Column import for domain Column
vscode/react/src/components/graph/ModelNode.tsx	Map API columns via fromAPIColumn, handle missing columns
vscode/react/src/components/graph/ModelColumns.tsx	Change static disabled prop to dynamic disabled

Comments suppressed due to low confidence (2)

vscode/react/src/components/graph/ModelColumns.tsx:210

• The disabled prop is now dynamic. Ensure there are unit or integration tests covering both enabled and disabled states of the column items to prevent regressions.

              disabled={disabled}

vscode/react/src/components/graph/ModelNode.tsx:69

• The identifier EnumColumnType is not imported, which will cause a reference error. Please import it from the appropriate module (e.g., @/api/client).

          fromAPIColumn({ name: column, type: EnumColumnType.UNKNOWN }),