Allow editing of data where a primary key column includes a % sign in the value. Fixes #4036

Fix an XSS issue seen in View/Edit data mode if a column name includes HTML. Fixes #4367

web/pgadmin/utils/driver/psycopg2/cursor.py

@@ -196,6 +196,9 @@ class DictCursor(_cursor):
         Execute function
         """
         self._odt_desc = None
+        if params is not None and len(params) == 0:
+            params = None
+
         return _cursor.execute(self, query, params)
 
     def executemany(self, query, params=None):