test: Adding missing tests or correcting existing tests

[Pavan-Microsoft]

Purpose

This pull request includes a comprehensive set of dependency and workflow updates, as well as improvements to the frontend's speech synthesis and test coverage. The most significant changes are grouped below by theme.

GitHub Actions & CI/CD Workflow Updates:

• Updated various GitHub Actions to their latest major versions across all workflow files, including actions/checkout, actions/upload-artifact, actions/download-artifact, actions/setup-python, actions/setup-node, and others, to improve security, stability, and maintainability. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17]
• Added a workflow_dispatch trigger to the test workflow for manual execution.

Frontend Dependency Upgrades:

• Upgraded multiple frontend dependencies and devDependencies in package.json to their latest versions, including React (to v19), Fluent UI, FontAwesome, lodash, testing libraries, Vite, and others, ensuring compatibility and access to new features and fixes.

Speech Synthesis and Audio Management Improvements:

• Improved speech synthesis handling in the chat UI:
  • Added logic to ensure speech is stopped and cleaned up when navigating between conversations or clearing the chat.
  • Enhanced the onSpeak handler to pass a reset function and ensure only one audio plays at a time. [1] [2] [3] [4] [5] [6] [7] [8]

Test and Code Quality Enhancements:

• Improved and updated frontend tests, including more precise assertions in Spinner and ChatMessageContainer tests, and added cleanup logic for mocks. [1] [2] [3] [4] [5]

These updates collectively enhance the reliability, maintainability, and user experience of the project.