Various font styling fixes on chart (#15572)

- Fix axis legends styling
- Fix legends styling
- Fix tooltip legends

---------

Co-authored-by: ehconitin <nitinkoche03@gmail.com>

packages/twenty-front/src/modules/page-layout/widgets/graph/components/GraphWidgetTooltip.tsx

@@ -85,6 +85,7 @@ const StyledTooltipRowRightContent = styled.div`
 `;
 
 const StyledTooltipLabel = styled.span`
+  color: ${({ theme }) => theme.font.color.tertiary};
   flex: 1;
   min-width: 0;
   overflow: hidden;

packages/twenty-front/src/modules/page-layout/widgets/graph/graphWidgetBarChart/hooks/useBarChartTheme.ts

@@ -17,9 +17,9 @@ export const useBarChartTheme = () => {
       },
       legend: {
         text: {
-          fill: theme.font.color.light,
+          fill: theme.font.color.secondary,
           fontSize: 12,
-          fontWeight: theme.font.weight.medium,
+          fontWeight: theme.font.weight.regular,
         },
       },
     },