sqlExport: Change "For"->"Event/Form Name" header name in transactions

at some point MembershipWorks changed the header in the CSV export

memberPlumbing/mw_models.py

@@ -225,7 +225,11 @@ class Transaction(BaseModel):
     phone = TextField(column_name="Phone", null=True)
     email = TextField(column_name="Email", null=True)
 
-    _csv_headers_override = {"_dp": "timestamp", "Transaction Type": "type"}
+    _csv_headers_override = {
+        "_dp": "timestamp",
+        "Transaction Type": "type",
+        "Event/Form Name": "for_",
+    }
 
     @classmethod
     def from_csv_dict(cls, data):