fix(compass-data-modeling): add telemetry for diagram created COMPASS-9525

[paula-stacho]

Adds Data Modeling Diagram Created event

[Copilot]

Pull Request Overview

Adds telemetry support for when a data modeling diagram is created in Compass.

• Introduces a new DataModelingDiagramCreated event type in the telemetry schema.
• Tracks the “Data Modeling Diagram Created” event (with collection count) in the analysis process.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
packages/compass-telemetry/src/telemetry-events.ts	Added DataModelingDiagramCreated event type and union
packages/compass-data-modeling/src/store/analysis-process.ts	Emitted telemetry event in startAnalysis

Comments suppressed due to low confidence (2)

packages/compass-telemetry/src/telemetry-events.ts:2879

• [nitpick] Add a JSDoc comment above this type to explain when the DataModelingDiagramCreated event is dispatched and clarify the num_collections payload.

type DataModelingDiagramCreated = CommonEvent<{

packages/compass-data-modeling/src/store/analysis-process.ts:208

• Add a unit test for startAnalysis that spies on services.track and asserts it's called with the "Data Modeling Diagram Created" event and correct num_collections value.

      services.track('Data Modeling Diagram Created', {

[mabaasit]

You probably want to add the @category to this event as well, so that it shows up in tracking plan something like this or else it would land on Other events

[paula-stacho]

Thanks @mabaasit !