Remove Vite production server

[kmcginnes]

Description

Vite is the tool we use for fast development on the React client side. It has a feature to run as a server, but it is discouraged to use in production.

We require running the client side through the proxy server. But there was an option in the code to run the client by itself without the proxy server.

This PR removes those options.

• Remove certificate handling in Vite config (still exists on the proxy server)
• Remove PNPM script to launch Vite server

Validation

• Smoke test

Related Issues

• None

Check List

• I confirm that my contribution is made under the terms of the Apache 2.0
  license.
• I have run pnpm checks to ensure code compiles and meets standards.
• I have run pnpm test to check if all tests are passing.
• I have covered new added functionality with unit tests if necessary.
• I have added an entry in the Changelog.md.