[ci] Update dotnet 9 eng arcade

[rmarinho]

Description of Change

Use darc to update the arcade bits |

 darc update-dependencies --channel ".NET 9 Eng" --verbose

This pull request updates several dependencies and configurations across multiple files to ensure compatibility with newer versions and improve project setup. The most important changes involve upgrading dependencies, modifying configuration files, and adding conditional logic for PME service connections.

Dependency Updates:

• Updated multiple dependencies in eng/Version.Details.xml to version 9.0.0-beta.25325.4, including Microsoft.DotNet.Build.Tasks.Feed, Microsoft.DotNet.Arcade.Sdk, Microsoft.DotNet.Build.Tasks.Installers, and others. Corresponding SHA values were updated as well.
• Updated package versions in eng/Versions.props to align with the new dependency versions, such as MicrosoftDotNetBuildTasksFeedVersion and MicrosoftDotNetRemoteExecutorPackageVersion.
• Updated the dotnet tool version to 9.0.107 and upgraded related SDK versions in global.json.

Configuration Changes:

• Added conditional logic in eng/common/core-templates/job/job.yml to set ConnectedPMEServiceName based on the System.TeamProject variable. This ensures proper service connection configuration for different projects.
• Introduced a <packageSourceMapping> section in eng/common/internal/NuGet.config with a <clear /> directive, preparing the configuration for future package source mappings.

[Copilot]

Pull Request Overview

This PR upgrades .NET 9 Arcade tool and SDK versions across build configurations, adds package source mapping scaffolding, and injects conditional PME service connection settings in the job template.

• Bumped dotnet and Arcade/Helix SDK versions in global.json, eng/Versions.props, and eng/Version.Details.xml
• Introduced an empty <packageSourceMapping> section in eng/common/internal/NuGet.config
• Added Azure Pipelines conditional logic for ConnectedPMEServiceName in eng/common/core-templates/job/job.yml

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
global.json	Updated dotnet tool and Arcade/Helix SDK prerelease versions
eng/common/internal/NuGet.config	Added <packageSourceMapping> with a <clear /> directive
eng/common/core-templates/job/job.yml	Added conditional ConnectedPMEServiceName based on project
eng/Versions.props	Bumped dependency version props to 9.0.0-beta.25325.4
eng/Version.Details.xml	Updated toolset dependency versions and SHAs

Comments suppressed due to low confidence (1)

eng/common/core-templates/job/job.yml:137

• Azure Pipelines template expressions (${{ }}) run at compile time and cannot evaluate runtime variables. To branch on System.TeamProject, use a runtime expression (e.g., $[ eq(variables['System.TeamProject'], 'DevDiv') ]) or refactor into a template parameter.

          ${{ if eq(variables['System.TeamProject'], 'DevDiv') }}:

[Copilot]

Introducing an empty with only will remove all default mappings and could prevent package resolution. Consider defining the necessary elements or delaying the insertion until mappings are ready.

Suggested change

	<clear />
	<clear />
	<package pattern="dotnet-core-internal-tooling/*" source="dotnet-core-internal-tooling" />