19976 【生产】先切到视频频道、视频还没有播放之前，切换到我的频道页，视频频道里面的视频会一直播放。

切换出去后再切回来isPlay设置为true触发play后提示err显示没有stop不能play故改为stop

@@ -98,7 +98,7 @@ export struct DetailPlayShortVideoPage {
           this.imageVisible = false
           this.imageVisible = false
         })
         })
       } else {
       } else {
-        this.playerController.pause()
+        this.playerController.stop()
       }
       }
     }
     }
   }
   }
@@ -189,6 +189,7 @@ export struct DetailPlayShortVideoPage {
   }
   }
 
 
   async aboutToAppear() {
   async aboutToAppear() {
+    this.isPlay = true
     if (!this.onlyWifiLoadVideo) {
     if (!this.onlyWifiLoadVideo) {
       this.onlyWifiLoadVideo = await onlyWifiLoadVideo()
       this.onlyWifiLoadVideo = await onlyWifiLoadVideo()
       this.toastTextVisible = this.onlyWifiLoadVideo ? false : true
       this.toastTextVisible = this.onlyWifiLoadVideo ? false : true