If you want to test if your sprite is overlapping something or not, there are two possibilities.
First: leave a small gap in the collision mask and fill out the hole:
Second: Add an invisible second sprite that fits the hole, pin it to the first Sprite and make your condition like this: Is overlapping Sprite_1 AND is NOT overlapping Sprite_2.
Edit: The first variant is very precise, while in the second variant objects of different sizes can simultaneously overlap Sprite_2 and the imaginary collision mask of Sprite_1. Depends on what you want to do with it at the end.