(Accessibility) Discover - (but probably generic to all charts) Chart components are not accessible

[barlowm]

Open the Discover page and add some data.
A chart component is revealed. The contents of the chart are not discernable by screen reader nor can the user use the keyboard only to access any information in the chart.

Kibana Version:
7.10

OS:
Windows 10

Browser:
Chrome

Screen reader: [if relevant]
NVDA

Relevant WCAG Criteria: WCAG Criterion - Level A/AA/AAA
2.1.1 Keyboard - Level A

All functionality of the content is operable through a keyboard

Relevant ARIA spec: WAI-ARIA Authoring Practices
N/A

[elasticmachine]

Pinging @elastic/kibana-accessibility (Project:Accessibility)

[myasonik]

Yup, problem with all charts across the site.

Charts a11y meta ticket: elastic/elastic-charts#300

Closing as there's not much the Kibana team can do about this right now