[CI] Install WiX 3.14

.github/actions/spell-check/expect.txt

@@ -1649,6 +1649,7 @@ rects
 recyclebin
 redirectedfrom
 Redist
+Redistributable
 reencode
 reencoded
 refactor

.pipelines/ci/templates/build-powertoys-steps.yml

@@ -95,6 +95,12 @@ steps:
     msbuildArgs: ${{ parameters.additionalBuildArguments }}
     maximumCpuCount: true
 
+- task: PowerShell@2
+  displayName: Download and install WiX 3.14 development build
+  inputs:
+    targetType: filePath
+    filePath: '$(build.sourcesdirectory)\.pipelines\installWiX.ps1'
+
 - task: NuGetCommand@2
   displayName: Restore NuGet packages for PowerToysSetup.sln
   inputs:

.pipelines/installWiX.ps1

@@ -0,0 +1,13 @@
+$WixDownloadUrl = "https://wixtoolset.org/downloads/v3.14.0.5722/wix314.exe"
+$WixBinariesDownloadUrl = "https://wixtoolset.org/downloads/v3.14.0.5722/wix314-binaries.zip"
+
+# Download WiX binaries
+Invoke-WebRequest -Uri $WixDownloadUrl -OutFile "$($ENV:Temp)\wix314.exe"
+Invoke-WebRequest -Uri $WixBinariesDownloadUrl -OutFile "$($ENV:Temp)\wix314-binaries.zip"
+
+# Install WiX
+Start-Process -Wait -FilePath "$($ENV:Temp)\wix314.exe" -ArgumentList "/install /quiet"
+
+# Extract WiX binaries and copy wix.targets to the installed dir
+Expand-Archive -Path "$($ENV:Temp)\wix314-binaries.zip" -Force -DestinationPath "$($ENV:Temp)"
+Copy-Item -Path "$($ENV:Temp)\wix.targets" -Destination "C:\Program Files (x86)\WiX Toolset v3.14\"