[Bug]: update portable (+ add arm)

[LinXP]

Is there an existing issue for this?

• I have searched the existing issues

What happened?

old manifest:

PackageIdentifier: Microsoft.Azure.AZCopy.10
PackageVersion: 10.29.1
InstallerType: zip
NestedInstallerType: portable
Installers:
- Architecture: x86
  NestedInstallerFiles:
  - RelativeFilePath: azcopy_windows_386_10.29.1\azcopy.exe
    PortableCommandAlias: azcopy
  InstallerUrl: https://azcopyvnext-awgzd8g7aagqhzhe.b02.azurefd.net/releases/release-10.29.1-20250515/azcopy_windows_386_10.29.1.zip
  InstallerSha256: 130E5044BDC14747B13F6AB5AAE8BBD6157AB03FE855D95556F3643C98B4EECF
- Architecture: x64
  NestedInstallerFiles:
  - RelativeFilePath: azcopy_windows_amd64_10.29.1\azcopy.exe
    PortableCommandAlias: azcopy
  InstallerUrl: https://azcopyvnext-awgzd8g7aagqhzhe.b02.azurefd.net/releases/release-10.29.1-20250515/azcopy_windows_amd64_10.29.1.zip
  InstallerSha256: F5DC02E2B2CDCD8DBEE719ABB60499EA1409526D89B0D5C23CFA62C5621E5B0C
ManifestType: installer
ManifestVersion: 1.9.0
ReleaseDate: 2025-05-15

command with addition of arm version:
komac update Microsoft.Azure.AZCopy.10 -v 10.29.0 -u https://github.com/Azure/azure-storage-azcopy/releases/download/v10.29.0/azcopy_windows_386_10.29.0.zip https://github.com/Azure/azure-storage-azcopy/releases/download/v10.29.0/azcopy_windows_amd64_10.29.0.zip https://github.com/Azure/azure-storage-azcopy/releases/download/v10.29.0/azcopy_windows_arm64_10.29.0.zip

generated new manifest:

# Created with komac v2.12.1
# yaml-language-server: $schema=https://aka.ms/winget-manifest.installer.1.10.0.schema.json

PackageIdentifier: Microsoft.Azure.AZCopy.10
PackageVersion: 10.29.0
InstallerType: zip
NestedInstallerType: portable
NestedInstallerFiles:
- RelativeFilePath: azcopy_windows_386_10.29.0/azcopy.exe
ReleaseDate: 2025-05-05
Installers:
- Architecture: x86
  InstallerUrl: https://github.com/Azure/azure-storage-azcopy/releases/download/v10.29.0/azcopy_windows_386_10.29.0.zip
  InstallerSha256: 7AAAA52C0AB85EA6BAAE9A49591E899AFD829A0675A8C95D71A8A8BF597C9FB2
ManifestType: installer
ManifestVersion: 1.10.0

[SSLbits]

I'm seeing similar issues where the PortableCommandAlias truncates those portable commands aliases. Example here:
microsoft/winget-pkgs@3a53293

INCORRECT:

• RelativeFilePath: Desktops64.exe
  PortableCommandAlias: esktops # Missing 'D'

• RelativeFilePath: notmyfaultc64.exe
  PortableCommandAlias: otmyfaultc # Missing 'n'

• RelativeFilePath: vmmap64.exe
  PortableCommandAlias: mmap # Missing 'v'

additional parsing error:

Manifest validation failed.
Manifest Error: The file type of the referenced file is not allowed. [RelativeFilePath] Value: CPUSTRES.EXE
Manifest Error: The file type of the referenced file is not allowed. [RelativeFilePath] Value: CPUSTRES64.EXE

I just renamed .EXE to .exe and then the manifest validated successfully.