.interactive adds and removes a scrollbar

When trying out the example below in a Jupyter Notebook a scrollbar is added and removed when I use the widgets.

This is a bad user experience.

My guess is that this can be solved by adding some padding or wrapping things in an additional container.


```python
import altair as alt
import panel as pn
pn.extension("vega")

def altair_plot(source):
return alt.Chart(source, width="container").mark_line().encode(x="bill_length_mm", y="bill_depth_mm")

import hvplot.pandas # noqa
import panel as pn
from bokeh.sampledata.penguins import data as df

w_sex = pn.widgets.MultiSelect(name='Sex', value=['MALE'], options=['MALE', 'FEMALE'])
w_body_mass = pn.widgets.FloatSlider(name='Min body mass', start=2700, end=6300, step=50)

dfi = df.interactive(loc='left', sizing_mode="stretch_width")
dfi.loc[(dfi['sex'].isin(w_sex)) & (dfi['body_mass_g'] > w_body_mass)].pipe(altair_plot)
```