Extend automatic accessibility testing to Charts and Dashboards components

When implementing the automatic accessibility testing for components, we have included those only for Base components.

However, the audit results for GitLab platform show issues found in charts and dashboards (see examples: https://gitlab.com/gitlab-org/gitlab/-/issues/511690, https://gitlab.com/gitlab-org/gitlab/-/issues/511788). We should extend the components that are included in the tests to those two categories.

Note: these two categories haven't been covered before with E2E accessibility tests. There might be quite a lot of work with fixing the violations.

Having these components covered and fixed will enable the audit issues to be closed.