fix: clear instances when page hidden

src/locales/en-US/playground.ts

@@ -133,6 +133,7 @@ export default {
     'The higher the value, the greater the modification to the original image.',
   'playground.image.edit.tips': 'Click or drag image to this area to upload',
   'playground.image.saveMask': 'Save Mask',
+  'playground.image.negativeMask': 'Negative Mask',
   'playground.image.brushSize': 'Brush Size',
   'playground.image.download': 'Download Image',
   'playground.image.generate': 'Generate',

src/locales/zh-CN/playground.ts

@@ -128,6 +128,7 @@ export default {
   'playground.image.strength.tip': '值越高，它对原图的修改越大',
   'playground.image.edit.tips': '点击或拖动图片到此区域上传',
   'playground.image.saveMask': '保存遮罩',
+  'playground.image.negativeMask': '反向遮罩',
   'playground.image.brushSize': '画笔大小',
   'playground.image.download': '下载图片',
   'playground.image.generate': '生成图片',