Move windows-x64-flutter.zip to windows-x64-debug location. (#119177)

The dependency is currently uploaded to two different locations. This
change is required to remove the duplicate uploads and their
corresponding tech debt.

packages/flutter_tools/lib/src/flutter_cache.dart

@@ -845,7 +845,7 @@ class IosUsbArtifacts extends CachedArtifact {
 // remove from existing host folder.
 // https://github.com/flutter/flutter/issues/38935
 const List<List<String>> _windowsDesktopBinaryDirs = <List<String>>[
-  <String>['windows-x64', 'windows-x64/windows-x64-flutter.zip'],
+  <String>['windows-x64', 'windows-x64-debug/windows-x64-flutter.zip'],
   <String>['windows-x64', 'windows-x64/flutter-cpp-client-wrapper.zip'],
   <String>['windows-x64-profile', 'windows-x64-profile/windows-x64-flutter.zip'],
   <String>['windows-x64-release', 'windows-x64-release/windows-x64-flutter.zip'],