revert wix and WixToolset.UI.wixext back to 6.0.2 because it is failing with 7.0.0

Author: chcg

.github/workflows/CI_build.yml

@@ -48,5 +48,5 @@ jobs:
            $env:PYTHONBUILDDIR_X64='${{ github.workspace }}\packages\python.3.14.7\tools'
            $env:PYTHONBUILDDIR='${{ github.workspace }}\packages\pythonx86.3.14.7\tools'
            Rename-Item -Path ".\buildPaths.bat.orig" -NewName "buildPaths.bat"
-           dotnet tool install --global wix --version 7.0.0
+           dotnet tool install --global wix --version 6.0.2
            .\buildAll.bat ${{ matrix.build_platform }}

PythonScript/project/packages.config

@@ -3,5 +3,5 @@
   <package id="python" version="3.14.7" targetFramework="native" />
   <package id="pythonarm64" version="3.14.7" targetFramework="native" />
   <package id="pythonx86" version="3.14.7" targetFramework="native" />
-  <package id="WixToolset.UI.wixext" version="7.0.0" targetFramework="native" />
+  <package id="WixToolset.UI.wixext" version="6.0.2" targetFramework="native" />
 </packages>

PythonScript/project/packages_local_pydebug.config

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="WixToolset.UI.wixext" version="7.0.0" targetFramework="native" />
+  <package id="WixToolset.UI.wixext" version="6.0.2" targetFramework="native" />
 </packages>

installer/buildInstaller.bat

@@ -51,7 +51,7 @@ SET /p PYTHONSCRIPTVERSION= < %INST_TEMP_DIR%\version.txt
 
 cd ..\packages
 echo add UI extension globally
-wix extension add -g WixToolset.UI.wixext/7.0.0
+wix extension add -g WixToolset.UI.wixext/6.0.2
 wix extension list -g
 cd ..\installer