fix(stories): add HttpClient registration to resolve missing contributors on About page

[jsakamoto]

Description

Register HttpClient in the DI container in the Blazing Story app's Program.cs to enable HTTP requests required by the About page.

Motivation / Context

The About page in the Blazing Story (Ignite UI for Blazor Lite) was not displaying the Contributors list. The root cause was that HttpClient was not registered as a service, causing the HTTP request to fetch contributor data to fail silently.

Type of Change (check all that apply):

• Bug fix
• New functionality
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactoring (no functional changes)
• Documentation
• Demos
• CI/CD
• Tests
• Changelog

Component(s) / Area(s) Affected:

Blazing Story (stories) / About page / Contributors list

How Has This Been Tested?

• Unit tests
• Manual testing
• Automated e2e tests

Test Configuration:

• .NET version: .NET 10
• Hosting model: Blazor Server (InteractiveServer)
• Browser(s): Microsoft Edge 148.0.3967.96
• OS: Windows

Screenshots / Recordings

Checklist:

• All relevant tags have been applied to this PR
• This PR includes unit tests covering all the new code
• This PR includes API docs for newly added methods/properties
• This PR includes general feature table updates in the root README.MD
• This PR includes CHANGELOG.MD updates for newly added functionality
• This PR contains breaking changes
• This PR includes behavioral changes and the feature specification has been updated with them
• Accessibility (ARIA, keyboard navigation, focus management) has been verified

[Copilot]

Pull request overview

This PR fixes the Blazing Story app’s About page Contributors list by registering HttpClient in the app’s DI container, enabling the About page to perform the HTTP requests it relies on.

Changes:

• Register HttpClient via builder.Services.AddHttpClient() in the Blazing Story app startup.