Correctly separate widgets in side-column mode. (#16804)

Had to close the other PR since I messed up re-basing somehow:
https://github.com/twentyhq/twenty/pull/16668/files.

Moved changes to this new PR in order to resolve comments from the
previous PR and also match the field-design to that on Figma.

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Co-authored-by: Baptiste Devessier <baptiste@devessier.fr>

packages/twenty-front/src/modules/page-layout/components/PageLayoutVerticalListViewer.tsx

@@ -6,7 +6,6 @@ const StyledVerticalListContainer = styled.div`
   display: flex;
   flex-direction: column;
   gap: ${({ theme }) => theme.spacing(2)};
-  padding: ${({ theme }) => theme.spacing(2)};
 `;
 
 type PageLayoutVerticalListViewerProps = {