LDEV-5259 Use MVC initialisation via annotation
Manually triggering controller scanning by adding an annotation handler
bean does not register all useful support beans. If
<mvc:annotation-driven> is used in spring-servlet.xml, all support beans
are registered via WebMvcConfigurer.
<mvc:path-matching suffix-pattern="true" /> need to be added because we
use .do suffix for Spring actions and suffix was turned off for Spring
5.3
https://github.com/spring-projects/spring-framework/issues/24179