[FIX] Chart: Fix flicker when copying chart as image

When copying a chart as an image, we create a new div with a canvas
to draw the image inside of it. However, the said div breaks the layout
of the spreadsheet during its short existence span.

Task: 4725067

Author: rrahir

src/helpers/figures/charts/chart_ui_common.ts

@@ -68,6 +68,7 @@ export async function chartToImageFile(
   const div = document.createElement("div");
   div.style.width = `${figure.width}px`;
   div.style.height = `${figure.height}px`;
+  div.style.position = "fixed";
   const canvas = document.createElement("canvas");
   div.append(canvas);
   canvas.setAttribute("width", figure.width.toString());