[tooltp] Fix #5449 (manually showTip trigger axisPointer)
[tooltp] Fix #5449 (manually showTip trigger axisPointer)

apache/incubator-echarts,chenfwind/echarts,chenfwind/echarts,ecomfe/echarts,ecomfe/echarts,apache/incubator-echarts,100star/echarts,100star/echarts