Added further detail to breaking changes for 17 relating to models builder and Razor runtime compilation

[AndyButland]

📋 Description

Added further detail to breaking changes for 17 relating to models builder and Razor runtime compilation

✅ Contributor Checklist

I've followed the Umbraco Documentation Style Guide and can confirm that:

• Code blocks are correctly formatted.
• Sentences are short and clear (preferably under 25 words).
• Passive voice and first-person language (“we”, “I”) are avoided.
• Relevant pages are linked.
• All links work and point to the correct resources.
• Screenshots or diagrams are included if useful.
• Any code examples or instructions have been tested.
• Typos, broken links, and broken images are fixed.

Product & Version (if relevant)

CMS 17

Deadline (if relevant)

Can merge at any time but publish on October 15th.

[eshanrnh]

Thanks for the PR, @AndyButland 🙌 We will review it soon.

[eshanrnh]

Thanks for the PR, @AndyButland 🙌. I have added two suggestions to improve the flow.

[github-actions]

The Link Checker found broken links in your PR.
Please review the following list:

Broken links found in: 17/umbraco-cms/fundamentals/setup/upgrading/version-specific/README.md

⚓ Anchor not found → 17/umbraco-cms/fundamentals/setup/upgrading/version-specific#umbraco-14 | Cannot find fragment

⚠ Unknown error → [522] http://issues.umbraco.org/issue/U4-6595 |#124; Rejected status code (this depends on your "accept" configuration): Unknown status code

⚠ Unknown error → [522] http://issues.umbraco.org/issue/U4-8031 |#124; Rejected status code (this depends on your "accept" configuration): Unknown status code

⚠ Unknown error → [522] http://issues.umbraco.org/issues/U4?q=Due+in+version%3A+7.6.0+Backwards+compatible%3F%3A+No+ |#124; Rejected status code (this depends on your "accept" configuration): Unknown status codeFull Github Actions output