图片播放录制音频暂停逻辑修改

BFRecordScreenKit/Classes/RecordScreen/Controller/BFRecordScreenImageManager.swift

@@ -61,6 +61,8 @@ class BFRecordScreenImageManager : BFRecordScreenBaseManager{
     override func pause() {
         timerr?.invalidate()
         timerr = nil
+        // add by ak 暂停时 isPlaying 设置为 false
+        isPlaying = false
     }
     
     override func deleteRecord(at: CMTime) {