use typeid(T1) == typeid(T2) from <typeinfo> for comparison of types and add debug output.

Summary: fix recurring error T22510 "Invalid ImageAccessor: PixelTypes of Image and ImageAccessor are not equal"

Test Plan: Hands-on tested in MitkWorkbench and MitkDiffusion.

Reviewers: O1 MITK Core!

Maniphest Tasks: T22510

Differential Revision: https://phabricator.mitk.org/D35