Description:
A partial revert of 8341329 fixing #5505.

Having a fixed pinch end distance that is larger than pinch start should avoid any repeated pinch start events. The original change was made to reduce/avoid a pinch being too "sticky", so I've kept the new pinch end distance closer to the pinch start than before as a compromise.

Main goal is to get the pinching behaviour in a reliable and working state again. Other solutions can be explored either in community components or incrementally refined in the core.

Changes proposed:

• Replace dynamic pinch end distance threshold criteria with fixed threshold