Optimized Canvas2D performance by setting willReadFrequently to true in checkSupport()

The willReadFrequently attribute is now explicitly set to true when obtaining the 2D rendering context for the canvas. This informs the browser that getImageData will be used frequently, potentially enhancing the speed of multiple readback operations.

Author: JulianPrieber

background-check.js

@@ -208,7 +208,7 @@
     canvas = document.createElement('canvas');
 
     if (canvas && canvas.getContext) {
-      context = canvas.getContext('2d');
+      context = canvas.getContext('2d', { willReadFrequently: true });
       supported = true;
     } else {
       supported = false;