Well type Lab Secret Passage cannot be Highlighted before activation

Issue:
When I find Secret Passage in the form of a well, I cannot highlight it, unlike other secret passages.

Solution:
Make the secret well highlighted when hovering by mouse like other secret passages and levers.

Steps to reproduce:
1. Go to the Labyrinth
2. Find a well type secret passage
3. Hover the mouse cursor over it

Screenshots:
The mouse is right over the Well.


The mouse clicked it.