Resolve "Points appear when mouse enter the scene even when visibility is set to false"

What does this MR do?

Fixes visibility problems when displaying points or landmarks and hiding these objects. The problem was: the points/landmarks displayed in a 3D scene appear when mouse enter the scene even when visibility is set to false

How to test it?

• Compile and launch VRRender
• Test 2DVisualization activity and add some landmarks.
• Hide one landmark and enter the mouse in the scene.
• The landmark should not appear

Associated Issues/Merge Requests

• Issues
  • Fixes #261 (closed)

Closes #261 (closed)