Return an error if user tries to save file for run in the created state

Author: alahiff

simvue/run.py

@@ -525,6 +525,10 @@ def save(self, filename, category, filetype=None, preserve_path=False, name=None
             self._error(INIT_MISSING)
             return False
 
+        if self._status == 'created' and category == 'output':
+            self._error("Cannot upload output files for runs in the created state")
+            return False
+
         is_file = False
         if isinstance(filename, str):
             if not os.path.isfile(filename):