Resolve "Fix incorrect floor in simulations"

Closes #224 (closed)

Contains

• !131 (merged)

Requires:

• sw/simox/simox!136 (merged)
• https://git.h2t.iar.kit.edu/sw/armarx/prior-knowledge-data/-/merge_requests/21

With the merge request in Simox most differences regarding the floor are gone. The merge request in PriorKnowledgeData is needed so that the colors of both floors match, as they do in ArViz.