[Topology.Mapping] Refactor Hexa2TetraTopologicalMapping to support MeshTopology output

[alxbilger]

Main changes:

• Input/output topology types are not checked in case the output topology is a MeshTopology. In this case, the output type is not well defined.
• Removed the check for a topology modifier.
• Removed the use of TetrahedronSetTopologyContainer, as we already have a link to a BaseMeshTopology. No need for specific methods in TetrahedronSetTopologyContainer.
• Replace set of tetrahedron components by a MeshTopology in a scene to show it works.

Note that using a MeshTopology will not support dynamic change of topology. But Hexa2TetraTopologicalMapping does not support it as well.

[with-all-tests]

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