Update to ASP.NET Core 10 RC2

[martincostello]

Update to Release Candidate 2 of ASP.NET Core 10.

[Copilot]

Pull Request Overview

Updates the project from ASP.NET Core 10 Release Candidate 1 to Release Candidate 2, including SDK, runtime, and related package versions.

• Updates .NET SDK version from RC1 to RC2 (10.0.100-rc.2.25502.107)
• Updates pre-release version iteration from 1 to 2 in build configuration
• Updates Microsoft.AspNetCore package versions to RC2

Reviewed Changes

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

File	Description
global.json	Updates SDK and dotnet tool versions to RC2
eng/Versions.props	Updates pre-release iteration number from 1 to 2
Directory.Packages.props	Updates Microsoft.AspNetCore package versions to RC2

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