add chartPrefix to ids. Fixes #733

[Jelmerovereem]

No description provided.

[iexitdev]

Maintainer triage note: I would close this PR rather than merge it as-is.

The underlying SVG ID collision from #733 is a valid issue, but current master already has a per-chart gradient ID helper in AbstractChart/BarChart, so the useful part of this PR appears to be superseded. This branch also mixes in unrelated changes: deleting FUNDING.yml, adding Dependabot and CI workflows, upgrading TypeScript, changing the test command to --passWithNoTests, tsconfig changes, and a separate type tweak.

If #733 still reproduces on latest master, the best path would be a new focused PR containing only the remaining SVG ID fix.