Fix image layer resize jitter

Disable desynchronized 2D canvas mode for image layers so resize paint stays synchronized and avoids blank-frame jitter on some platforms.

Signed-off-by: sergiochan <yuheng9211@qq.com>

Author: SergioChan

addons/addon-image/src/ImageRenderer.ts

@@ -358,7 +358,8 @@ export class ImageRenderer extends Disposable implements IDisposable {
       canvas.style.zIndex = '0';
       screenElement.appendChild(canvas);
     }
-    const ctx = canvas.getContext('2d', { alpha: true, desynchronized: true });
+    // Keep rendering synchronized with resize to avoid blank-frame jitter on some platforms.
+    const ctx = canvas.getContext('2d', { alpha: true, desynchronized: false });
     if (!ctx) {
       canvas.remove();
       return;