feat(Add mock data generator modal container) (CLOUD-333848)

[ncarbon]

Description

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 introduces a mock data generator modal container with experimentation provider support for the CLOUD-333848 ticket. The implementation establishes the foundation for a multi-step modal workflow with A/B testing capabilities.

• Adds a new experimentation provider context for managing A/B test assignments
• Creates a multi-step mock data generator modal with state management
• Exports the experimentation provider for cross-package usage

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
packages/compass-web/src/index.tsx	Exports CompassExperimentationProvider for external use
packages/compass-telemetry/src/index.ts	Exports experimentation provider from telemetry package
packages/compass-telemetry/src/experimentation-provider.tsx	Implements React context for experiment assignment and tracking
packages/compass-collection/src/components/mock-data-generator-modal/types.ts	Defines enum for modal workflow steps
packages/compass-collection/src/components/mock-data-generator-modal/mock-generator-modal.tsx	Creates multi-step modal component with state management
packages/compass-collection/src/components/mock-data-generator-modal/constants.ts	Defines default document count constant

[Copilot]

The Back button is always rendered but should be disabled or hidden on the first step (AI_DISCLAIMER). Currently clicking Back on step 1 will have no effect but provides a confusing user experience.

Suggested change

	<Button onClick={onBack}>Back</Button>
	<Button onClick={onBack} disabled={currentStep === MockDataGeneratorSteps.AI_DISCLAIMER}>
	Back
	</Button>

[Copilot]

The Next button text should change to 'Generate' or 'Finish' on the final step (GENERATE_DATA) to better indicate the action being performed.

Suggested change

	Next
	{currentStep === MockDataGeneratorSteps.GENERATE_DATA ? 'Generate' : 'Next'}

[Copilot]

Multiple state variables are defined but never used in the current implementation. Consider removing unused state variables (rawSchema, fakerSchema, validationRules, sampleDoc) or add TODO comments indicating their planned usage.

Suggested change

	const [rawSchema, setRawSchema] = useState<string | null>(null);
	const [fakerSchema, setFakerSchema] = useState<string | null>(null);
	const [outputDocsCount, setOutputDocsCount] = useState<number>(
	DEFAULT_OUTPUT_DOCS_COUNT
	);
	const [validationRules, setValidationRules] = useState<string | null>(null);
	const [sampleDoc, setSampleDoc] = useState<string | null>(null);
	const resetState = () => {
	setCurrentStep(MockDataGeneratorSteps.AI_DISCLAIMER);
	setRawSchema(null);
	setFakerSchema(null);
	setOutputDocsCount(DEFAULT_OUTPUT_DOCS_COUNT);
	setValidationRules(null);
	setSampleDoc(null);
	const [outputDocsCount, setOutputDocsCount] = useState<number>(
	DEFAULT_OUTPUT_DOCS_COUNT
	);
	const resetState = () => {
	setCurrentStep(MockDataGeneratorSteps.AI_DISCLAIMER);
	setOutputDocsCount(DEFAULT_OUTPUT_DOCS_COUNT);