Prevent getCurrentTime() from returning 0 at the end of the audio track playback (#2452)

* Fix AudioEngineImpl::getCurrentTime() returning 0 at the end of the sound track playback

* Ensure streaming audio source current time works as well

Author: rh101

core/audio/AudioEngineImpl.cpp

@@ -830,6 +830,11 @@ float AudioEngineImpl::getCurrentTime(AUDIO_ID audioID)
                 AXLOGE("{}, audio id:{},error code:{:#x}", __FUNCTION__, audioID, error);
             }
         }
+
+        if (ret == 0.0f && player->isFinished())
+        {
+            ret = player->_audioCache->_duration;
+        }
     }
 
     return ret;