RobotImporter: mirror mesh data

[jhanca-robotecai]

Some urdf files (e.g. Agility Robotics Digit Robot) use negative scale values in order to mirror meshes (left leg to right leg, etc.). Such robot description files cannot be successfully imported into o3de using the existing importer. As a short-term approach, a notification should be displayed to the user. Mesh mirroring component might be a desirable approach in the future.

Current message:

<12:40:40> [Warning] (Editor Non-uniform Scale Component) - SetScale value was clamped from 1.00000000,-1.00000000,1.00000000 to 1.00000000,0.01000000,1.00000000 for entity right_shoulder_yaw_visual