python: use the builtin installer folder

Signed-off-by: Adrian Vladu <avladu@cloudbasesolutions.com>

Author: ader1990

.github/workflows/build_test_cbsinit.yml

@@ -30,7 +30,7 @@ jobs:
             -VSRedistDir "''" ^
             -CloudbaseInitRepoUrl ${{ matrix.cbsinit_repo }} ^
             -CloudbaseInitRepoBranch ${{ matrix.cbsinit_branch }} ^
-            -InstallOfficialPythonMsi:$true ^
+            -InstallOfficialPythonMsi:$false ^
             -OfficialPythonMsiChecksum "C10234D0D9BD89F6F6DD55BAE28EDE0F97EE0DF4"
     - uses: actions/upload-artifact@v7
       with: