Accessibility issue: Plotly overlays are active

[rmbielby]

Describe the bug
The charts show the Plotly toolbar overlay which has significant accessibility issues. The toolbar generally creates confusing information via screen readers and offers functionality that can't be accessed from the keyboard.

To Reproduce
Currently seen in all charts by default

Expected behaviour
Plotly toolbar overlay should be switched off. This can be done by using the following code:

config={"displayModeBar": False}

Screenshots