[ModelicaSystem] fix rebase - use csvfile instead of csvFile

Author: syntron

OMPython/ModelicaSystem.py

@@ -1281,7 +1281,7 @@ def _createCSVData(self, csvfile: Optional[pathlib.Path] = None) -> pathlib.Path
             csv_rows.append(row)
 
         if csvfile is None:
-            csvFile = self._tempdir / f'{self._model_name}.csv'
+            csvfile = self._tempdir / f'{self._model_name}.csv'
 
         with open(file=csvfile, mode="w", encoding="utf-8", newline="") as fh:
             writer = csv.writer(fh)