Update to use latest workspace image

Issue - Build workspace base image and use it as base f... (gitlab#524214 - closed)

What does this MR do and why?

• Bump Web Ide workspace to use the latest base image
• Switch to use mise from asdf
• Replace script scripts/initialize-workspaces.sh with post-start command cd /projects/gitlab-web-ide && mise install && yarn install && git submodule update --init -f
• Bump python from 3.10.0 to 3.10.2

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Screenshots or screen recordings

See below comment for testing !556 (comment 2684477758)

How to set up and validate locally

NA, workspace features.