feat: Refactor icon components and update button elements for improved accessibility and consistency

app/src/components/layout/sidebarLeft/visualization/widgets/ChartComponent.tsx

@@ -1,6 +1,5 @@
 import React, { useEffect, useRef, useMemo } from "react";
 import { Chart } from "chart.js/auto";
-// import { useThemeStore } from "../../../../../store/useThemeStore";
 
 // Define Props Interface
 interface ChartComponentProps {
@@ -29,7 +28,6 @@ const ChartComponent = ({
   data: propsData,
 }: ChartComponentProps) => {
   const canvasRef = useRef<HTMLCanvasElement>(null);
-  // const { themeColor } = useThemeStore();
 
   // Memoize Theme Colors to Prevent Unnecessary Recalculations
   // const buttonActionColor = useMemo(
@@ -66,7 +64,7 @@ const ChartComponent = ({
   // Memoize Chart Font Style
   const chartFontStyle = useMemo(
     () => ({
-      family: fontFamily || "Arial",
+      family: fontFamily ?? "Arial",
       size: fontSizeValue,
       weight: fontWeightValue,
       color: "#2B3344",