Import - Fix (#19938)

Fixes
https://discord.com/channels/1130383047699738754/1496121832619774042/1496121832619774042

Before
<img width="1089" height="734" alt="Screenshot 2026-04-21 at 16 23 27"
src="https://github.com/user-attachments/assets/6fe17bc1-b1ec-4b5d-a922-d472ff4c4f2f"
/>
After
<img width="1089" height="731" alt="Screenshot 2026-04-21 at 16 22 56"
src="https://github.com/user-attachments/assets/ab7e8fe4-8188-4222-a237-992b73a1594e"
/>

packages/twenty-front/src/modules/spreadsheet-import/steps/components/ValidationStep/ValidationStep.tsx

@@ -12,9 +12,7 @@ import { type SpreadsheetColumns } from '@/spreadsheet-import/types/SpreadsheetC
 import { SpreadsheetColumnType } from '@/spreadsheet-import/types/SpreadsheetColumnType';
 import { addErrorsAndRunHooks } from '@/spreadsheet-import/utils/dataMutations';
 import { useDialogManager } from '@/ui/feedback/dialog-manager/hooks/useDialogManager';
-import { ModalContent } from 'twenty-ui/layout';
 import { styled } from '@linaria/react';
-import { themeCssVariables } from 'twenty-ui/theme-constants';
 import { Trans, useLingui } from '@lingui/react/macro';
 import {
   type Dispatch,
@@ -23,6 +21,8 @@ import {
   useMemo,
   useState,
 } from 'react';
+import { ModalContent } from 'twenty-ui/layout';
+import { themeCssVariables } from 'twenty-ui/theme-constants';
 // @ts-expect-error Todo: remove usage of react-data-grid`
 import { type RowsChangeData } from 'react-data-grid';
 import { isDefined } from 'twenty-shared/utils';
@@ -80,6 +80,7 @@ const StyledScrollContainer = styled.div`
   flex-direction: column;
   flex-grow: 1;
   height: 0px;
+  overflow: auto;
   width: 100%;
 `;