Portal 2 Bug: Save load causes a pressed `prop_floor_button` to be stuck in activated state

[LambdaCore21]

Describe the bug

Saveload glitch

Simultaneous cube grabbing and quicksaving causes the floor button to become stuck in "pressed" state:

https://github.com/StrataSource/Engine/assets/63379443/60c765b3-c8e7-44e1-9e55-516fc7e23d6a

To Reproduce

1. Look slightly above the cube
2. Press "E" (to grab the cube) and quicksave at the same time
3. Load the last save

Issue Map

Any map with a cube and floor button

Expected Behavior

prop_floor_button should never get stuck in any state

Operating System

No response