Add project name normalization to match aspire's code generator logic

[ViveliDuCh]

Fixes #6811

Apply project name transformation in the templates' generated code using the same normalization logic as in Aspire.Hosting.AppHost.targets. This ensures that when the --aspire flag is used, the generated AppHost/Program.cs references normalized class names (e.g., some_name instead of some.name), resolving build errors caused by mismatched type or namespace references.

Add execution tests to verify the fix for templates with dots or other non-identifier characters in their names.

Microsoft Reviewers: Open in CodeFlow

[Copilot]

Pull Request Overview

This PR addresses build errors that occur when using the --aspire flag with project names containing dots or other non-identifier characters. The fix applies Aspire's project name normalization logic to templates to ensure generated code references match the normalized class names.

• Adds project name normalization transforms to template configuration
• Introduces a new test case to verify the fix works with project names containing dots
• Ensures consistency between template-generated code and Aspire's AppHost target behavior

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
AIChatWebExecutionTests.cs	Adds test case for project names with dots to verify normalization fix
template.json	Implements project name normalization transforms using regex replacement

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[MackinnonBuck]

Just one piece of feedback but looks great!

[jeffhandley]

Good idea removing _Web from the replacement token so that it doesn't have to be re-appended.

Since this is now a single-step regex replacement, I had look back at the https://github.com/dotnet/templating/wiki/Reference-for-template.json#derived-symbol docs to understand why this is a derived replacer vs. the same generator approach as is used in the Aspire template. It makes sense though--we need the project name to get plugged in and do post-processing over that derived symbol.

Looks good!