Blocknote editor fix (#11823)

After reading the blocknote documentation :

- we decided to increase to 100% the lines width
- we decided to reduce as much as possible inner padding
- we decided it's on the parent to decide the padding of the richtext
The two last points are recommended in a discussion on the project
blocknote. This way clicking on padding won't trigger weird behaviour on
Chrome.

Fixes
https://github.com/twentyhq/core-team-issues/issues/827#issuecomment-2842350359

packages/twenty-front/src/modules/ui/layout/show-page/components/ShowPageActivityContainer.tsx

@@ -19,6 +19,8 @@ const ActivityRichTextEditor = lazy(() =>
 const StyledShowPageActivityContainer = styled.div`
   margin-top: ${({ theme }) => theme.spacing(6)};
   width: 100%;
+  padding-inline: 44px;
+  box-sizing: border-box;
 `;
 
 const StyledSkeletonContainer = styled.div`