Fix mouse cursor when switching the move mode

[vincentfretin]

This fixes #634

[rahulkgupta]

i dont think the mouse cursor is resetting back to the pointer when the select button is clicked

[vincentfretin]

It's coming back to the pointer only if you hover on a clickable entity, if you hover on a non clickable entity it's the hand move cursor.
But there is indeed an issue that if you hover on the previous hovered entity it doesn't change to the pointer cursor.
I disable now the raycaster, this properly fixes the mouse cursor.