Multiple tables from a chart share id

[AleksueiR]

When several tables are rendered from a single chart, their ids are the same. Not only this is not valid HTML, but the WET table parser refuses to parse such tables._

[AleksueiR]

Is this even a valid use case - to render multiple tables for a single chart?

[AleksueiR]

The id of the table is linked to the id of the chart here: https://github.com/highcharts/highcharts/blob/0c4f54a6b3d5f5c89ae47d8c5f7146a6d315d6e4/js/modules/screen-reader.src.js#L711

There are also some accessibility features relying on that id value, and it doesn't look that's it easy to change that id.

We can disallow multiple instances of the same chart table as a "solution" here.