revert(navigation-drawer): unwanted desktop design changes from #20634 (#20955)

Follow-up to #20634. Removes three desktop design changes that bled in
unintentionally:

- `font-weight: regular` → restored to `medium` on nav item labels
- `MenuItemIconBoxContainer` wrap around bare icons → removed
- Section title `padding-right/top` tweak → restored to original values

Mobile-specific fixes from #20634 (slide-over drawer width, min-width
overflow fixes, breadcrumb cleanup, etc.) are preserved.

packages/twenty-front/src/modules/ui/navigation/navigation-drawer/components/NavigationDrawerItem.tsx

@@ -24,7 +24,6 @@ import {
   TooltipDelay,
   TooltipPosition,
 } from 'twenty-ui/display';
-import { MenuItemIconBoxContainer } from 'twenty-ui/navigation';
 import {
   MOBILE_VIEWPORT,
   ThemeContext,
@@ -162,7 +161,7 @@ const StyledLabelParent = styled.div`
 `;
 
 const StyledItemLabel = styled.span`
-  font-weight: ${themeCssVariables.font.weight.regular};
+  font-weight: ${themeCssVariables.font.weight.medium};
 `;
 
 const StyledItemSecondaryLabel = styled.span`
@@ -350,20 +349,18 @@ export const NavigationDrawerItem = ({
               </StyledIcon>
             ) : (
               <StyledIcon>
-                <MenuItemIconBoxContainer>
-                  <Icon
-                    style={{
-                      minWidth: theme.icon.size.md,
-                    }}
-                    size={theme.icon.size.md}
-                    stroke={theme.icon.stroke.md}
-                    color={
-                      showBreadcrumb && !isExpanded
-                        ? theme.font.color.light
-                        : 'currentColor'
-                    }
-                  />
-                </MenuItemIconBoxContainer>
+                <Icon
+                  style={{
+                    minWidth: theme.icon.size.md,
+                  }}
+                  size={theme.icon.size.md}
+                  stroke={theme.icon.stroke.md}
+                  color={
+                    showBreadcrumb && !isExpanded
+                      ? theme.font.color.light
+                      : 'currentColor'
+                  }
+                />
               </StyledIcon>
             ))}
 

packages/twenty-front/src/modules/ui/navigation/navigation-drawer/components/NavigationDrawerSectionTitle.tsx

@@ -17,8 +17,8 @@ const StyledTitle = styled.div`
   justify-content: space-between;
   padding-bottom: ${themeCssVariables.spacing[1]};
   padding-left: ${themeCssVariables.spacing[1]};
-  padding-right: ${themeCssVariables.spacing[1]};
-  padding-top: ${themeCssVariables.spacing[2]};
+  padding-right: ${themeCssVariables.spacing['0.5']};
+  padding-top: ${themeCssVariables.spacing[1]};
 
   &:hover {
     background-color: ${themeCssVariables.background.transparent.light};