Problem updating existing manifest with more urls.

Brief description of your issue

When having an existing manifest that has been approved, it seems impossible to add more installers and/or languages.

Steps to reproduce

wingetcreate update IDMComputerSolutions,Inc.UEStudio --urls https://downloads.ultraedit.com/main/ues/win/ues_english.exe https://downloads.ultraedit.com/main/ues/win/ues_english_64.exe https://downloads.ultraedit.com/main/ues/win/ues_german.exe https://downloads.ultraedit.com/main/ues/win/ues_german_64.exe https://downloads.ultraedit.com/main/ues/win/ues_italian.exe https://downloads.ultraedit.com/main/ues/win/ues_italian_64.exe https://downloads.ultraedit.com/main/ues/win/ues_spanish.exe https://downloads.ultraedit.com/main/ues/win/ues_spanish_64.exe https://downloads.ultraedit.com/main/ues/win/ues_french.exe https://downloads.ultraedit.com/main/ues/win/ues_french_64.exe https://downloads.ultraedit.com/main/ues/win/ues_portuguese.exe https://downloads.ultraedit.com/main/ues/win/ues_portuguese_64.exe https://downloads.ultraedit.com/main/ues/win/ues_japanese.exe https://downloads.ultraedit.com/main/ues/win/ues_japanese_64.exe https://downloads.ultraedit.com/main/ues/win/ues_korean.exe https://downloads.ultraedit.com/main/ues/win/ues_korean_64.exe https://downloads.ultraedit.com/main/ues/win/ues_chinese.exe https://downloads.ultraedit.com/main/ues/win/ues_chinese_64.exe https://downloads.ultraedit.com/main/ues/win/ues_chinese_traditional.exe https://downloads.ultraedit.com/main/ues/win/ues_chinese_traditional_64.exe https://downloads.ultraedit.com/main/ues/win/ues_english.msi https://downloads.ultraedit.com/main/ues/win/ues_english_64.msi https://downloads.ultraedit.com/main/ues/win/ues_german.msi https://downloads.ultraedit.com/main/ues/win/ues_german_64.msi https://downloads.ultraedit.com/main/ues/win/ues_italian.msi https://downloads.ultraedit.com/main/ues/win/ues_italian_64.msi https://downloads.ultraedit.com/main/ues/win/ues_spanish.msi https://downloads.ultraedit.com/main/ues/win/ues_spanish_64.msi https://downloads.ultraedit.com/main/ues/win/ues_french.msi https://downloads.ultraedit.com/main/ues/win/ues_french_64.msi https://downloads.ultraedit.com/main/ues/win/ues_portuguese.msi https://downloads.ultraedit.com/main/ues/win/ues_portuguese_64.msi https://downloads.ultraedit.com/main/ues/win/ues_japanese.msi https://downloads.ultraedit.com/main/ues/win/ues_japanese_64.msi https://downloads.ultraedit.com/main/ues/win/ues_korean.msi https://downloads.ultraedit.com/main/ues/win/ues_korean_64.msi https://downloads.ultraedit.com/main/ues/win/ues_chinese.msi https://downloads.ultraedit.com/main/ues/win/ues_chinese_64.msi https://downloads.ultraedit.com/main/ues/win/ues_chinese_traditional.msi https://downloads.ultraedit.com/main/ues/win/ues_chinese_traditional_64.msi

Expected behavior

It was expected to update the existing manifest via a PR.

Actual behavior

Wingetcreate gives the following error:
Updating a manifest is only supported with the same number of installer URLs.

Environment

winget --info
Windows Package Manager v1.4.10173
Copyright (c) Microsoft Corporation. All rights reserved.

Windows: Windows.Desktop v10.0.19045.2673
System Architecture: X64
Package: Microsoft.DesktopAppInstaller v1.19.10173.0

Start by reproducing the wingetcreate update command from the issue and trace the validation that emits “Updating a manifest is only supported with the same number of installer URLs.” Identify the relevant update entry point and any associated tests. Done means an approved manifest can be updated with additional installer URLs and the expected pull request is generated.