fix: Remove vertical scroll overflow in todo example

[JacksonIsaac]

Github issue

Fixes #776

Before output

After output

[JacksonIsaac]

@mturoci The latest commit should fix all the examples, both horizontal and vertical scroll wherever I could notice improvement opportunities.

[mturoci]

Thanks @JacksonIsaac, a few more adjustments are necessary. I recommend completing this on your laptop screen rather than an external monitor so that you can see the scrollbars directly + it's how most of our users will do.

The following is a list of examples that need adjustments:

• wide plot
• wide article preview
• form
• textbox
• table
• table tags
• image
• image annotator
• frame path
• plot schema
• plot form
• plot pandas
• vegalite form
• vegalite flex
• bokeh callbacks

[mturoci]

Thanks @JacksonIsaac!