[nrf noup] Update generate.py script to make it work on Windows

scripts/tools/zap/generate.py

@@ -150,6 +150,10 @@ def extractGeneratedIdl(output_dir, zap_config_path):
         # multiple extensions. This is to work with existing codebase only
         raise Error("Unexpected input zap file  %s" % self.zap_config)
 
+    # If the ".matter" already exists in this location, some OS (e.g. Windows) will not allow to simply overwrite it.
+    if os.path.exists(target_path):
+        os.remove(target_path)
+
     os.rename(idl_path, target_path)