docs: remove references to the Web Codegen Scorer project - #70805

The angular/web-codegen-scorer project seems to be no longer maintained, so the docs should not point developers to it or promise continued investment in it.

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/angular/angular/blob/main/contributing-docs/commit-message-guidelines.md
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• angular.dev application / infrastructure changes
• Other... Please describe:

What is the current behavior?

The current documentation mention angular/web-codegen-scorer in roadmap and AI-related doc pages.

Issue Number: N/A

What is the new behavior?

This PR removes mentions about angular/web-codegen-scorer from Angular docs

Does this PR introduce a breaking change?

• Yes
• No

Other information