Update UnbrandedGeneratorVersion to 1.0.0-alpha.20260122.1

[azure-sdk]

This PR updates the UnbrandedGeneratorVersion property in eng/Packages.Data.props and the @typespec/http-client-csharp dependency in eng/packages/http-client-csharp/package.json to version 1.0.0-alpha.20260122.1.

Details

• TypeSpec commit that triggered this PR: microsoft/typespec@a1b401b

Changes

• Updated eng/Packages.Data.props UnbrandedGeneratorVersion property
• Updated eng/packages/http-client-csharp/package.json dependency version
• Ran npm install to update package-lock.json
• Ran eng/packages/http-client-csharp/eng/scripts/Generate.ps1 to regenerate test projects
• Generated emitter-package.json artifacts using tsp-client

This is an automated PR created by the TypeSpec publish pipeline.

[Copilot]

Pull request overview

This automated PR updates the TypeSpec HTTP Client C# generator to version 1.0.0-alpha.20260122.1, triggered by a TypeSpec commit. The update includes version bumps across configuration files, regenerated test projects reflecting improved XML documentation formatting, and updated package lock files.

Changes:

• Updated UnbrandedGeneratorVersion from 1.0.0-alpha.20260120.1 to 1.0.0-alpha.20260122.1 across all configuration files
• Regenerated test projects with improved C# XML documentation formatting (converting markdown-style bullets and formatting to proper XML tags)
• Updated package lock files to reflect the new dependency version and transitive dependency updates (tar: 7.5.4 → 7.5.6)

Reviewed changes

Copilot reviewed 3 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
eng/Packages.Data.props	Updated UnbrandedGeneratorVersion property to new version
eng/packages/http-client-csharp/package.json	Updated @typespec/http-client-csharp dependency version
eng/packages/http-client-csharp/package-lock.json	Updated lockfile with new dependency version and integrity hashes
eng/http-client-csharp-emitter-package.json	Updated @typespec/http-client-csharp dependency version
eng/http-client-csharp-emitter-package-lock.json	Updated lockfile with new dependency version, integrity hashes, and transitive dependency (tar) update
eng/packages/http-client-csharp/generator/TestProjects/Spector/http/documentation/src/Generated/Models/BulletPointsEnum.cs	Regenerated code with improved XML documentation format (markdown bullets → <list> tags, **bold** → <b>, *italic* → <i>)

Files not reviewed (2)

• eng/http-client-csharp-emitter-package-lock.json: Language not supported
• eng/packages/http-client-csharp/package-lock.json: Language not supported

[jorgerangel-msft]

@copilot regenerate the test libraries using https://github.com/Azure/azure-sdk-for-net/blob/main/eng/packages/http-client-csharp/eng/scripts/Generate.ps1 and check in any changes to the generated test libraries.

[Copilot]

@jorgerangel-msft I've opened a new pull request, #55198, to work on those changes. Once the pull request is ready, I'll request review from you.