fix(@angular/cli): remove standalone true ref in ai tutor

[devchas]

PR Checklist

Please check to confirm your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/angular/angular-cli/blob/main/CONTRIBUTING.md#-commit-message-guidelines
• 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
• Other... Please describe:

What is the current behavior?

Issue Number: 32909

What is the new behavior?

AI Tutor should no longer give examples with standalone: true

Does this PR introduce a breaking change?

• Yes
• No

Other information

[gemini-code-assist]

Code Review

This pull request removes the redundant standalone: true property from an Angular component example within the ai-tutor.md resource file, reflecting the fact that components are now standalone by default in recent Angular versions. I have no feedback to provide as there were no review comments to evaluate.