fix: add tooltips to all DM toolbar items COMPASS-9830

[paula-stacho]

Description

Screen.Recording.2025-10-13.at.10.03.49.mov

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
• 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 tooltips to all toolbar items in the data modeling diagram editor to improve user experience and accessibility. It wraps existing IconButton and Button components with Tooltip components and provides descriptive text for each action.

• Wraps all toolbar buttons (Undo, Redo, Add Collection, Add Relationship, Export) with Tooltip components
• Updates the relationship tooltip text to be more concise and clear
• Maintains existing button functionality while adding hover help text

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[codeowners-service-app]

Assigned nvs119 for team compass-developers because Anemy is out of office.