Updating the cody-web-experimental package to the latest version which

• Fixed problems with telemetry (now we send agent level of telemetry events with Web.Cody client name)
• Fixed remote repository context as you switch between chats
• Added support for cody context filters in file and symbols mentions
• Improved link rendering for remote files (no more "remote-file://" protocol prefixes.

Also, this PR adds some missing CSS token overrides for the LLM picker on dotcom.

Note: I, by accident, pushed the 0.2.2 version with the same build as I have published already in 0.2.1. NPM doesn't allow to override the build with the same version, so I had to publish 0.2.3 to make it through to the Sourcegraph repo. This is why we jump from 0.2.1 to 0.2.3

Test plan

-General manual checks for Cody Web