RViz crashes when launched by yarpmanager

I'm working on a Windows machine in which I installed ROS via the robostack distribution of `ros-noetic-desktop`.

It happens that if I launch Rviz via `yarpmanager`, it crashes the moment it starts to visualize the model.
If, instead, I launch it via command line, the visualizer works fine.

@traversaro

Reproduce the crash on Windows by launching RViz through yarpmanager, then compare it with the working command-line launch. Inspect the differing launch environment and visualization startup path; done means the model can be visualized through yarpmanager without RViz crashing.

Written by the indexing model from the issue text.