[Update Request]: WindowsAppRuntime.2 2.4.0

### What type of update are you requesting?

A new version of an existing package

### Current Package Identifier

[Update Request]: WindowsAppRuntime.2

### Package Version

2.4.0

### Please describe the changes you would like to see

There is a new release (2.4.0) available.
Download Page URL: https://learn.microsoft.com/en-us/windows/apps/windows-app-sdk/downloads
Installer (x64): https://aka.ms/windowsappsdk/2.4/2.4.0/windowsappruntimeinstall-x64.exe
Installer (x86): https://aka.ms/windowsappsdk/2.4/2.4.0/windowsappruntimeinstall-x86.exe
Installer (arm64): https://aka.ms/windowsappsdk/2.4/2.4.0/windowsappruntimeinstall-arm64.exe

Start by locating the existing WindowsAppRuntime.2 package manifest in winget-pkgs and compare its metadata with the 2.4.0 release information at the provided download page. Update the manifest for the new version and verify the x64, x86, and arm64 installer URLs and checksums as required by the repository.

Written by the indexing model from the issue text.