Downsample message extends to full panel

[jnumainville]

Description

Downsample message is covered up when combined in a ui.panel

Steps to reproduce
Two plots, one of which, bizday_plot_line, has enough data to prompt the downsample message

ui.column(ui.panel(bizday_plot_line, bizday_plot_bar))

Expected results
If message comes up, it can be dismissed. More or less this screenshot, but without the need for different panels.

Actual results
Downsample buttons are blocked by second chart