Design fixes + hide email tab if not a company or a person (#3720)

Design fixes + hide email tab

Co-authored-by: Thomas Trompette <thomast@twenty.com>
Co-authored-by: Lucas Bordeau <bordeau.lucas@gmail.com>

packages/twenty-front/src/modules/ui/input/button/components/IconButton.tsx

@@ -129,7 +129,7 @@ const StyledButton = styled.button<
                 ? `0 0 0 3px ${theme.accent.tertiary}`
                 : 'none'};
               color: ${!disabled
-                ? theme.font.color.secondary
+                ? theme.font.color.tertiary
                 : theme.font.color.extraLight};
               &:hover {
                 background: ${!disabled