All IDs prefixed with chart- are treated as charts #24
Description
We're testing and hoping to roll out usage of wagtailcharts for our site's data visualization needs soon.
We noticed, while building out a demo page, that including a subheading of "Chart options" was breaking rendering for all charts on the page. This seems to be because wagtailcharts treats every ID attribute prefixed with chart- as part of an actual chart, and has no error handling if that's not the case.
Our team may work on a fix and contribute upstream soon, but I wanted to flag it for the team here.