Legend name not passed when using frame animation

Hi,

Legend names are sometimes not passed when using frame option.

#This is working (without frame)
plot_ly()%>%add_markers(1:3,2:4)%>%add_markers(1:3,2:4,name="New name")

#This is not (with frame)
plot_ly()%>%add_markers(1:3,2:4,frame=c(1,1,2))%>%add_markers(1:3,2:4,frame=c(1,2,2),name="New name")

#This is working (with frame) ! 
#This works apparently because frame 1 is repeated twice (frame=c(1,1,2) is okay but frame=c(1,2,3) is not)
plot_ly()%>%add_markers(1:3,2:4,frame=c(1,1,2))%>%add_markers(1:3,2:4,frame=c(1,1,2),name="New name")

[Package plotly version 4.10.4]

使用 plotly R 版本 4.10.4 重现 issue 中的三个 plot_ly() 示例，比较 frame 值重复与不同时的图例名称。跟踪 frame 动画处理，以确定第二个 trace 的名称在哪里丢失；当不同 frame 的命名图例项得以保留且不会破坏正常工作的情况时，即视为完成。