Blueprint movement gets bad when large height differences occur

[KJeff01]

Describe the bug
Possibly since the introduction of interpolation to blueprint movement in #1260, one might occasionally see the movement of the blueprint seriously accelerate and jump around the screen before stopping.

I believe this is due to extreme height differences around slopes when moving the mouse around as you try to place something. One can accidentally order trucks to place structures where you don't want them and also waste time trying to place something somewhere as it flies across the screen.

To Reproduce
Steps to reproduce the behavior:
There are multiple ways to see this but just choose a factory and try to move the blueprint around the start of a cliff, or even take a hardpoint around the drop of a cliff.

An easy example to see this is to try placing a factory around the cliffs North-West of the trucks in the beginning of Alpha campaign.

Expected behavior
Should not have blueprints violently move around the screen.

Your System:

• OS: Ubuntu MATE 22.04
• Game version: master / 4.2.7.

Additional context
Function displayBlueprints() in src/display3d.cpp
class ValueTracker in src/animation.h

[KJeff01]

Duplicate of #1578. Didn't notice an older issue already reported this. So closing.