[gclient_scm] Disable gclient auto config on Windows

Bug: b/328682976
Change-Id: Ic096807302d8d345435c8913d84913aafba3d4d0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/6367721
Reviewed-by: Josip Sokcevic <sokcevic@chromium.org>
Commit-Queue: Allen Li <ayatane@chromium.org>

gclient_scm.py

@@ -1368,7 +1368,9 @@ class GitWrapper(SCMWrapper):
         gclient_utils.safe_makedirs(parent_dir)
 
         # Set up Git authentication configuration that is needed to clone/fetch the repo.
-        if newauth.Enabled():
+        #
+        # Disabled on Windows
+        if newauth.Enabled() and os.name != 'nt':
             # We need the host from the URL to determine auth settings.
             # The url parameter might have been re-written to a local
             # cache directory, so we need self.url, which contains the