scale中设置tickCount，图中呈现不准确问题

[yinyiGit]

在实例https://viserjs.github.io/demo.html#/viser/others/double-axes

使用如下scale const scale = [{ dataKey: 'call', tickCount: 5, min: 0 }, { dataKey: 'people', tickCount: 7, min: 0 }, { dataKey: 'waiting', tickCount: 5, min: 0 }];

结果次轴刻度数不是7