Fix the Improved Icon Detection

[mrixner]

• I have read the contributing guidelines, and I agree with the Code of Conduct.
• Have you checked that there aren't other open pull requests for the same changes?
• Have you tested that the committed code can be executed without errors?
• This PR is not composed of garbage changes used to farm GitHub activity to enter potential Crypto AirDrops.
  Any user suspected of farming GitHub activity with crypto purposes will get banned. Submitting broken code wastes the contributors' time, who have to spend their free time reviewing, fixing, and testing code that does not even compile breaks other features, or does not introduce any useful changes. I appreciate your understanding.

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This PR fixes #3189; that PR was checking for sources in the manager section and was also partially getting the logic wrong. Here's the tested, updated, revised, etc logic (for ALL checks, as they are in the code right now):

Winget - Steam: convert to steam:{id}
Winget - Local PC: remove anything before a \
Winget - Microsoft Store: remove the publisher (or anything before a \ if there is no publisher) and the _version_architecture__random-id (note that if the version has multiple underscores, only the last four underscores remove what is after them, so there can be underscores in a normalized ID)
Winget: remove the publisher
Scoop: remove .app
Chocolatey: remove .install and .portable
vcpkg: remove the triplet and any build options

All are in lowercase.

Package Manager	Source	Manager-Provided ID	Normalized (Icon) ID
Winget	Steam	ARP\Machine\X64\Steam App 32440	steam:32440
Winget	Steam	ARP\Machine\X64\Steam App 32470	steam:32470
Winget	Steam	ARP\Machine\X64\Steam App 32510	steam:32510
Winget	Local PC	ARP\Machine\X64\MozillaMaintenanceService	mozillamaintenanceservice
Winget	Local PC	ARP\Machine\X86\{F1E37C98-16B7-421F-BA33-6C5B5400012A}	{f1e37c98-16b7-421f-ba33-6c5b5400012a}
Winget	Local PC	ARP\Machine\X64\{40F0DCB4-E81A-45CE-A596-F2D083E1D535}_is1	{40f0dcb4-e81a-45ce-a596-f2d083e1d535}_is1
Winget	Microsoft Store	MSIX\35795FlorianHeidenreich.Mp3tag.ShellExtension_3.26.2.0_x64__hyhc94k68ebpm	mp3tag.shellextension
Winget	Microsoft Store	MSIX\E0469640.LenovoUtility_4.6.12.0_x64__5grkq8ppsgwt4	lenovoutility
Winget	Microsoft Store	MSIX\NearbyShareLauncher_1.0.2002.2_neutral__21hpf16v5xp10	nearbysharelauncher
Winget	Microsoft Store	MSIX\Microsoft.4297127D64EC6_2.2.2.0_x64__8wekyb3d8bbwe	4297127d64ec6
Winget	Microsoft Store	MSIX\Microsoft.Copilot_1.25013.74.0_x64__8wekyb3d8bbwe	copilot
Winget	Microsoft Store	MSIX\Microsoft.HEVCVideoExtension_2.2.9.0_x64__8wekyb3d8bbwe	hevcvideoextension
Winget	Microsoft Store	MSIX\Microsoft.NET.Native.Framework.2.2_2.2.29512.0_x64__8wekyb3d8bbwe	net.native.framework.2.2
Winget	Microsoft Store	MSIX\Microsoft.WinAppRuntime.DDLM.5001.119.156.0-x6_5001.119.156.0_x64__8wekyb3d8bbwe	winappruntime.ddlm.5001.119.156.0-x6
Winget	any source	Microsoft.AppInstaller	appinstaller
Winget	any source	Microsoft.WindowsTerminal	windowsterminal
Winget	any source	Valve.Steam	steam
Scoop	any source	Arbitrary.app	arbitrary
Scoop	any source	Arbitrary	arbitrary
Chocolatey	any source	Arbitrary.portable	arbitrary
Chocolatey	any source	Arbitrary.install	arbitrary
Chocolatey	any source	Arbitrary	arbitrary
vcpkg	any source	libflac:x64-mingw-dynamic	libflac
vcpkg	any source	vcpkg-cmake-get-vars:x64-mingw-dynamic	vcpkg-cmake-get-vars
vcpkg	any source	tiff[jpeg]:x64-windows	tiff
anything else	anything else	Arbitrary7aysd^__	arbitrary7aysd^__
anything else	anything else	Arbitrary.test-file_2.2	arbitrary.test-file_2.2
anything else	anything else	Arbitrary	arbitrary

If you accept this PR, you might want to reference something like this table here. (this page also appears to be incorrect; it says "Package ids will be normalized. This means that the id will show in lowercase, and the spaces, underscores and dots (" ", "_", ".") will be replaced by dashes ("-")." but I don't think that happens anymore? I could be wrong about that though.)