chore: move diagramming dependency to compass-components

[Anemy]

Context: https://mongodb.slack.com/archives/C08KETBQ2QN/p1755603250954539?thread_ts=1755603016.988329&cid=C08KETBQ2QN

A bit tangential, but as it has so much dependencies on LG, we should probably move it under compass-components and re-export from there to make sure leafygreen deps are not spreading around the repo through transitive deps

[Copilot]

Pull Request Overview

This PR moves the diagramming dependency from direct usage to being re-exported through compass-components to prevent transitive leafygreen dependencies from spreading throughout the codebase.

• Adds diagramming as a dependency to compass-components package
• Creates a re-export module for diagramming components and types
• Updates all imports across compass-data-modeling to use compass-components instead of direct diagramming imports

Reviewed Changes

Copilot reviewed 11 out of 12 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
packages/compass-components/package.json	Adds @mongodb-js/diagramming dependency
packages/compass-components/src/components/diagramming.tsx	Creates re-export module for diagramming components and types
packages/compass-components/src/index.ts	Exports the new diagramming re-export module
packages/compass-data-modeling/src/utils/nodes-and-edges.tsx	Updates diagramming type imports to use compass-components
packages/compass-data-modeling/src/store/export-diagram.ts	Updates DiagramInstance type import to use compass-components
packages/compass-data-modeling/src/store/analysis-process.ts	Updates applyLayout import to use compass-components
packages/compass-data-modeling/src/services/export-diagram.tsx	Updates all diagramming imports to use compass-components
packages/compass-data-modeling/src/components/export-diagram-modal.tsx	Updates diagramming imports and reorganizes imports
packages/compass-data-modeling/src/components/diagram-editor.tsx	Updates diagramming imports to use compass-components
packages/compass-data-modeling/src/components/diagram-editor.spec.tsx	Updates test stubs to use compass-components instead of diagramming
packages/compass-data-modeling/src/components/data-modeling.tsx	Updates DiagramProvider import to use compass-components

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