With version 2.1.210 of H2, a Servlet 5-compatible version of the console servlet is available.
This PR is basically a revert of the commit for #28590. However, H2ConsoleAutoConfiguration now uses JakartaWebServlet instead of WebServlet.
Comment From: wilkinsona
Great stuff. Thanks very much for this, @hpoettker, and for driving the changes in H2 as well. Much appreciated.