Support Microsoft.Maui.Controls v9.0.30 and .NET SDK v9.0.102

[TheCodeTraveler]

Description of Change

This PR adds support for the latest .NET MAUI Workload and the latest version of Microsoft.Maui.Controls.

Additional information

I've added the breaking change This label is used for PRs that include a breaking change label because this change requires users to update their local environment. Below is the ##Requirements section we will add to the Release Notes for our next releases.

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Requirements

The following tools are now required for CommunityToolkit.Maui:

• Download/install .NET SDK v9.0.102
• Install Xcode 16.2.0 (or higher)
  • Read the latest .NET MAUI Release wiki to always find the latest-supported version) of Xcode for .NET MAUI
  • We HIGHLY recommend using the open-source tool Xcodes to easily manage your installed Xcode versions
• Update to the latest stable version of Visual Studio (or Jet Brains Rider)
• After installing the latest stable .NET SDK, update to the latest stable version of the .NET MAUI workload:
  • On macOS, open the Terminal and enter the following command: sudo dotnet workload install maui; sudo dotnet workload update
  • On Windows, open the command prompt (or Powershell) and enter the following command: dotnet workload install maui;dotnet workload update
• Add a global.json file to your application with the following parameters to ensure you're not using a unsupported preview version of .NET (example below)
  • The .NET MAUI Community Toolkit does not support preview releases of .NET

global.json

{
  "sdk": {
    "version": "9.0.102", 
    "rollForward": "latestFeature",
    "allowPrerelease": false
  }
}

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