refactor: enable willReadFrequently

Co-authored-by: HardyNLee <hardy--lee@outlook.com>

Author: ahzvenol

packages/webgal/src/Core/controller/stage/pixi/GifResource.ts

@@ -76,7 +76,7 @@ export class GifResource extends BaseImageResource {
       if (!gifFrames.length) throw new Error('Invalid GIF file');
 
       const canvas = document.createElement('canvas');
-      const ctx = canvas.getContext('2d')!;
+      const ctx = canvas.getContext('2d', { willReadFrequently: true })!;
       const patchCanvas = document.createElement('canvas');
       const patchCtx = patchCanvas.getContext('2d')!;