fix: complete field telemetry events COMPASS-10066

[paula-stacho]

Description

When looking at amplitude I've noticed we somehow skipped the FieldAdded event. We also forgot to properly assign the source for the 2 field edit events.

After:

(Field type edit from diagram is in progress - cc @mabaasit)

Checklist

• New tests and/or benchmarks are included
• Documentation is changed or added
• If this change updates the UI, screenshots/videos are added and a design review is requested
• If this change could impact the load on the MongoDB cluster, please describe the expected and worst case impact
• I have signed the MongoDB Contributor License Agreement (https://www.mongodb.com/legal/contributor-agreement)

Motivation and Context

• Bugfix
• New feature
• Dependency update
• Misc

Open Questions

Dependents

Types of changes

• Backport Needed
• Patch (non-breaking change which fixes an issue)
• Minor (non-breaking change which adds functionality)
• Major (fix or feature that would cause existing functionality to change)

[Copilot]

Pull Request Overview

This PR adds telemetry tracking for the previously missing "Field Added" event and properly assigns the source parameter ('side_panel' or 'diagram') for field edit operations in the data modeling feature.

• Added DataModelingDiagramFieldAdded event type and tracking
• Updated field rename and type change events to include source parameter from both side panel and diagram interactions
• Refactored function signatures to accept source tracking parameter

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
packages/compass-telemetry/src/telemetry-events.ts	Added new DataModelingDiagramFieldAdded event type and updated existing field event types to include 'diagram' as a valid source
packages/compass-data-modeling/src/store/diagram.ts	Added telemetry tracking calls for field additions and updated function signatures to accept and pass source parameter
packages/compass-data-modeling/src/components/drawer/field-drawer-content.tsx	Updated function signatures and call sites to pass 'side_panel' as the source for field operations
packages/compass-data-modeling/src/components/diagram-editor.tsx	Updated function signatures and call sites to pass 'diagram' as the source for field operations

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