Fix cpprest checked iterator build error

[Trenly]

📖 Description

Adds a patch for cpprestsdk to allow it to build in VS2026 18.5.3

🔗 References

• Resolves Compilation for cpprestsdk fails on Visual Studio 18.5.3 #6300

🔍 Validation

Built locally

✅ Checklist

• Signed the Contributor License Agreement
• Linked to an issue
• Updated Release Notes (if applicable)
• Updated documentation (if applicable)
• Updated Copilot instructions (if build, architecture, or conventions changed)

📋 Issue Type

• Bug fix
• Feature
• Task

Microsoft Reviewers: Open in CodeFlow

[florelis]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[florelis]

Could you add a note about this new patch to the overlay README, please? And also a comment somewhere about what the patch is about.

[florelis]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[florelis]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[florelis]

I just remembered that we need to update the cgmanifest.json for this. I'll do it in a separate PR just so we don't need to have yet another round of review for this one

Edit: never mind, the base commit is still the same, it just has another patch on top