bug: cow reorients when dragged a second time

[evemartin]

Describe the bug
Right after a cow is dragged onto the Level Editor grid, when it is re-dragged to a new spot on the grid, its orientation changes. This reorientation does not happen if it has already been re-dragged to a new spot.

To Reproduce
Steps to reproduce the behaviour:

1. Go to the Level Editor
2. Drag a cow to place it on the grid. Do not place it on a road
3. Re-drag the cow to a new spot on the grid. Notice that its orientation changes so that it faces a different direction

Expected behaviour
The cow's orientation while dragging should not change. (The orientation should only change when the cow is dragged to a road and the cow reorients to match the road, this functionality is working though so is not part of this task)

Screenshots

Screencast.from.04-09-24.11.09.45.webm

Additional context
This task might be related to Task #1717 but because it is a behaviour specific to cows rather than all scenery I have made it separate just in case