Feat: merge the begin operator's url and file into one field #3355 (#3521)

### What problem does this PR solve?

Feat: merge the begin operator's url and file into one field #3355
### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/pages/flow/form/generate-form/dynamic-parameters.tsx

@@ -36,7 +36,6 @@ const DynamicParameters = ({ nodeId }: IProps) => {
       title: t('key'),
       dataIndex: 'key',
       key: 'key',
-      width: 50,
       onCell: (record: IGenerateParameter) => ({
         record,
         editable: true,