Implement the continuous property for the class stage info?

[andy840119]

https://youtu.be/alR4Ac9evFg?t=172
We can note that second lyric is next to the first lyric.
Not really sure should implement that because the priority might not that higher.
And might be hard to implemented.

Mark as part of #1755.

[andy840119]

Not very sure how to do this because it's not able to get the previous lyric's position.
Or need to think about how to get the position in the applier?