(EAI-926) UI supports clientContext

[nlarew]

Jira: (EAI-926) UI supports clientContext

Changes

• Adds a getClientContext prop to Chatbot that allows clients to send arbitrary data to the server
• Updates the conversations service to accept & pass clientContext

[Copilot]

Pull Request Overview

This PR enables the UI to support client context data by adding an optional getClientContext prop and updating the conversation service and tests to handle the additional data.

• Added a getClientContext prop to the Chatbot component and useConversation hook.
• Updated the conversation service methods (addMessage and addMessageStreaming) to accept and include clientContext in the request payload.
• Extended tests to verify that clientContext is correctly forwarded during message and streaming operations.

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
packages/mongodb-chatbot-ui/src/useConversation.tsx	Introduces the getClientContext parameter and passes it to service methods.
packages/mongodb-chatbot-ui/src/services/conversations.ts	Updates request payloads in addMessage and addMessageStreaming to include clientContext.
packages/mongodb-chatbot-ui/src/services/conversations.test.ts	Adds tests to ensure clientContext is handled properly for messages and streaming events.
packages/mongodb-chatbot-ui/src/Chatbot.tsx	Propagates getClientContext from Chatbot to InnerChatbot.
packages/mongodb-chatbot-ui/src/App.tsx	Demonstrates usage of getClientContext in the example App.

[mongodben]

lgtm, docs update too pls