Zip files with same Relative File Path but different Aliases are combined across Installers

Reproduce the issue with the provided wingetcreate update command and inspect how NestedInstallerFiles entries are grouped across the x64 and arm64 installer nodes. Verify that entries sharing a relative path but having different aliases remain within their original installer node, then confirm manifest validation succeeds.

Brief description of your issue

The latest manifest for Microsoft.DSC has an x64 portable zip installer and an arm64 portable zip installer. Both reference the same relative file path for the executable, but the portable command alias is different. When running wingetcreate update the entries get combined causing validation to fail

... (x64)
  NestedInstallerFiles:
  - RelativeFilePath: dsc.exe
    PortableCommandAlias: dsc
... (arm64)
  NestedInstallerFiles:
  - RelativeFilePath: dsc.exe
    PortableCommandAlias: dscarm64

Result after wingetcreate update:

... (x64)
  NestedInstallerFiles:
  - RelativeFilePath: dsc.exe
    PortableCommandAlias: dsc
  - RelativeFilePath: dsc.exe
    PortableCommandAlias: dscarm64
... (arm64)
  NestedInstallerFiles:
  - RelativeFilePath: dsc.exe
    PortableCommandAlias: dsc
  - RelativeFilePath: dsc.exe
    PortableCommandAlias: dscarm64

Steps to reproduce

wingetcreate update Microsoft.DSC --version 3.2.0 --urls 'https://github.com/PowerShell/DSC/releases/download/v3.2.0/DSC-3.2.0-x86_64-pc-windows-msvc.zip' 'https://github.com/PowerShell/DSC/releases/download/v3.2.0/DSC-3.2.0-aarch64-pc-windows-msvc.zip' 'https://github.com/PowerShell/DSC/releases/download/v3.2.0/DSC-3.2.0-Win.msixbundle'

Expected behavior

Entries would be preserved per installer node

Actual behavior

Entries are combined

Environment

Windows Package Manager Manifest Creator v1.12.8.0
Copyright (c) Microsoft Corporation. All rights reserved.

Operating System: Microsoft Windows NT 10.0.26200.0
System Architecture: X64

Winget-Create Directories  Path                                                                                                           
------------------------------------------------------------------------------------------------------------------------------------------
Logs                       %LOCALAPPDATA%\Packages\Microsoft.WindowsPackageManagerManifestCreator_8wekyb3d8bbwe\LocalState\DiagOutputDir  
User settings              %LOCALAPPDATA%\Packages\Microsoft.WindowsPackageManagerManifestCreator_8wekyb3d8bbwe\LocalState\settings.json  
Installer cache            %TEMP%\wingetcreate