[ModelicaSystem] fix initialisation of default OMCSession - use *Local

Author: syntron

OMPython/ModelicaSystem.py

@@ -378,7 +378,7 @@ def __init__(
         if session is not None:
             self._session = session
         else:
-            self._session = OMCSession(omhome=omhome)
+            self._session = OMCSessionLocal(omhome=omhome)
 
         # set commandLineOptions using default values or the user defined list
         if command_line_options is None: