Doc export script isn't including samples in some cases

[michael-hawker]

Describe the bug

See: https://learn.microsoft.com/en-us/dotnet/communitytoolkit/windows/media/effectanimations

It should be replacing these with code, but something isn't working as expected here:

Tooling-Windows-Submodule/Build-Toolkit-Docs.ps1

Lines 42 to 64 in 58649b8

	foreach ($sample in ($contents | Select-String -Pattern '>\s*\[!SAMPLE\s*(?<sampleid>.*)\s*\]\s*' -AllMatches).Matches) {
	$sampleid = $sample.Groups[1].Value
	$sampleString = $sample.Groups[0].Value
	# Find matching filename for CS
	foreach ($csFile in Get-ChildItem -Recurse -Path ($markdownFile.DirectoryName + '\**\*.xaml.cs').Replace('\', '/') |
	Where-Object { $_.FullName -notlike "*\bin\*" -and $_FullName -notlike "*\obj\*" }) {
	$csSample = Get-Content $csFile -Raw
	if ($csSample -match '\[ToolkitSample\s?\(\s*id:\s*(?:"|nameof\()\s?' + $sampleid + '\s?(?:"|\))') {
	# Get Relative Path
	$docPath = $(Join-Path "components" $($csfile.FullName.Replace($componentsRoot.Path, ''))).Replace('\', '/').Trim('/')
	# See https://learn.microsoft.com/en-us/contribute/content/code-in-docs#out-of-repo-snippet-references
	$snippet = ':::code language="xaml" source="~/../code-windows/' + $docPath.Substring(0, $docPath.Length - 3) + '":::' + "`n`n"
	$snippet = $snippet + ':::code language="csharp" source="~/../code-windows/' + $docPath + '":::' + "`n`n"
	# Replace our Sample Placeholder with references for docs
	$contents = $contents.Replace($sampleString, $snippet)
	}
	}
	}

Maybe with XAML vs. C#?

Steps to reproduce

Look at docs

Expected behavior

Should have example code vs. sample placeholder

Screenshots

No response

Code Platform

• UWP
• WinAppSDK / WinUI 3
• Web Assembly (WASM)
• Android
• iOS
• MacOS
• Linux / GTK

Windows Build Number

• Windows 10 1809 (Build 17763)
• Windows 10 1903 (Build 18362)
• Windows 10 1909 (Build 18363)
• Windows 10 2004 (Build 19041)
• Windows 10 20H2 (Build 19042)
• Windows 10 21H1 (Build 19043)
• Windows 11 21H2 (Build 22000)
• Other (specify)

Other Windows Build number

No response

App minimum and target SDK version

• Windows 10, version 1809 (Build 17763)
• Windows 10, version 1903 (Build 18362)
• Windows 10, version 1909 (Build 18363)
• Windows 10, version 2004 (Build 19041)
• Other (specify)

Other SDK version

No response

Visual Studio Version

No response

Visual Studio Build Number

No response

Device form factor

No response

Additional context

No response

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