set field size limit (#4683)

* set field size limit

* don't use sys.maxsize

---------

Co-authored-by: Richard Kuo <rkuo@rkuo.com>
Co-authored-by: Richard Kuo (Onyx) <rkuo@onyx.app>

backend/onyx/connectors/salesforce/sqlite_functions.py

@@ -351,6 +351,9 @@ class OnyxSalesforceSQLite:
         if self._conn is None:
             raise RuntimeError("Database connection is closed")
 
+        # some customers need this to be larger than the default 128KB, go with 16MB
+        csv.field_size_limit(16 * 1024 * 1024)
+
         updated_ids = []
 
         with self._conn: