[macOS] Add MetalToolchain component for Xcode 26+ (#13088)

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

images/macos/scripts/build/Install-Xcode.ps1

@@ -10,7 +10,7 @@ Import-Module "$env:HOME/image-generation/helpers/Xcode.Installer.psm1" -Disable
 
 $arch = Get-Architecture
 [Array]$xcodeVersions = (Get-ToolsetContent).xcode.$arch.versions
-write-host $xcodeVersions
+Write-Host $xcodeVersions
 $defaultXcode = (Get-ToolsetContent).xcode.default
 [Array]::Reverse($xcodeVersions)
 $threadCount = "5"
@@ -33,7 +33,10 @@ Write-Host "Configuring Xcode versions..."
 $xcodeVersions | ForEach-Object {
     Write-Host "Configuring Xcode $($_.link) ..."
     Invoke-XcodeRunFirstLaunch -Version $_.link
-    Install-AdditionalSimulatorRuntimes -Version $_.link -Arch $arch -Runtimes $_.install_runtimes
+    Install-XcodeAdditionalSimulatorRuntimes -Version $_.link -Arch $arch -Runtimes $_.install_runtimes
+    if ($_.link -match '\d{2}(?=[._])' -and [int]$matches[0] -ge 26) {
+        Install-XcodeAdditionalComponents -Version $_.link
+    }
 }
 
 Invoke-XcodeRunFirstLaunch -Version $defaultXcode

images/macos/scripts/helpers/Xcode.Installer.psm1

@@ -42,46 +42,6 @@ function Invoke-DownloadXcodeArchive {
     return $tempXipDirectory
 }
 
-function Resolve-ExactXcodeVersion {
-    param (
-        [Parameter(Mandatory)]
-        [string] $Version
-    )
-
-    # if toolset string contains spaces, consider it as a full name of Xcode
-    if ($Version -match "\s") {
-        return $Version
-    }
-
-    $semverVersion = [SemVer]::Parse($Version)
-    $availableVersions = Get-AvailableXcodeVersions
-    $satisfiedVersions = $availableVersions | Where-Object { $semverVersion -eq $_.stableSemver }
-
-    return $satisfiedVersions | Select-Object -Last 1 -ExpandProperty rawVersion
-}
-
-function Get-AvailableXcodeVersions {
-    $rawVersionsList = Invoke-XCVersion -Arguments "list" | ForEach-Object { $_.Trim() } | Where-Object { $_ -match "^\d" }
-    $availableVersions = $rawVersionsList | ForEach-Object {
-        $partStable,$partMajor = $_.Split(" ", 2)
-        $semver = $stableSemver = [SemVer]::Parse($partStable)
-
-        if ($partMajor) {
-            # Convert 'beta 3' -> 'beta.3', 'Release Candidate' -> 'releasecandidate', 'GM Seed 2' -> 'gmseed.2'
-            $normalizedLabel = $partMajor.toLower() -replace " (\d)", '.$1' -replace " ([a-z])", '$1'
-            $semver = [SemVer]::new($stableSemver.Major, $stableSemver.Minor, $stableSemver.Patch, $normalizedLabel)
-        }
-
-        return [PSCustomObject]@{
-            semver = $semver
-            rawVersion = $_
-            stableSemver = $stableSemver
-        }
-    }
-
-    return $availableVersions | Sort-Object -Property semver
-}
-
 function Expand-XcodeXipArchive {
     param (
         [Parameter(Mandatory)]
@@ -145,18 +105,16 @@ function Approve-XcodeLicense {
     }
 }
 
-function Install-XcodeAdditionalPackages {
+function Install-XcodeAdditionalComponents {
     param (
         [Parameter(Mandatory)]
         [string] $Version
     )
 
-    Write-Host "Installing additional packages for Xcode $Version..."
+    Write-Host "Installing additional MetalToolchain component for Xcode $Version..."
     $xcodeRootPath = Get-XcodeRootPath -Version $Version
-    $packages = Get-ChildItem -Path "$xcodeRootPath/Contents/Resources/Packages" -Filter "*.pkg" -File
-    $packages | ForEach-Object {
-        Invoke-ValidateCommand "sudo installer -pkg $($_.FullName) -target / -allowUntrusted"
-    }
+    $xcodeBuildPath = Get-XcodeToolPath -XcodeRootPath $xcodeRootPath -ToolName "xcodebuild"
+    Invoke-ValidateCommand "$xcodeBuildPath -downloadComponent MetalToolchain" | Out-Null
 }
 
 function Invoke-XcodeRunFirstLaunch {
@@ -170,7 +128,7 @@ function Invoke-XcodeRunFirstLaunch {
     Invoke-ValidateCommand "sudo $xcodeRootPath -runFirstLaunch"
 }
 
-function Install-AdditionalSimulatorRuntimes {
+function Install-XcodeAdditionalSimulatorRuntimes {
     param (
         [Parameter(Mandatory)]
         [string] $Version,