Update Faces to Use Servlet's HttpServletMapping

Rather than generating the mappings ourselves, we should just rely on HttpServletMapping: https://jakarta.ee/specifications/servlet/6.0/apidocs/jakarta.servlet/jakarta/servlet/http/httpservletmapping

I tried updating it myself, but ran into issues with the unit test since we don't have an underlying servlet in these tests (but a Mock one instead). This caused the returned HttpServletMapping to be nul due to the super call belowl, and hundreds of tests failed.

https://github.com/apache/myfaces/blob/89c747e85615e3f33265e664c8361789f38ea7db/test/src/main/java/org/apache/myfaces/test/mock/MockHttpServletRequest.java#L1117

    @Override
    public HttpServletMapping getHttpServletMapping()
    {
        return HttpServletRequest.super.getHttpServletMapping();
    }

Initial test branch: https://github.com/volosied/myfaces/commits/fix-mappings

By updating here, we would also follow Mojarra: https://github.com/eclipse-ee4j/mojarra/pull/4956