Spring Attempt to reset Servlet response before calling ExceptionHandlers

Fix #30702

If any other changes are needed, feel free to ask me. : )

Comment From: bclozel

Thanks for your contribution @aooohan !

Comment From: bclozel

After discussing this with @rstoyanchev , we agreed that dealing with this at the DispatcherServlet level would be a better fit as it would cover all types of exception resolvers, at the Servlet level.

I've adressed that in 0d7c9b7c9.