Maximise Height Not Working

### Microsoft PowerToys version

0.100.2

### Installation method

PowerToys auto-update

### Area(s) with issue?

FancyZones

### Steps to reproduce

It used to be that double-clicking the top edge of a window would maximise its height. This now doesn't work in all cases.

Works:
If the window is not near the top edge of the screen.
If the window was tiled using Windows Snap (not PowerToys FancyZones).

Doesn't work:
If the window was tiled using PowerToys FancyZones.

This behaviour previously worked correctly with FancyZones, so this appears to be a recent regression.

### ✔️ Expected Behavior

Window should maximise height.

### ❌ Actual Behavior

Maximises to whole screen.

### Upload Bug Report ZIP-file

_No response_

### Additional Information

_No response_

### Other Software

_No response_

Reproduce the issue in FancyZones on PowerToys 0.100.2 by tiling a window with FancyZones and double-clicking its top edge, then compare it with Windows Snap and a window away from the screen edge. Done means the FancyZones-tiled window maximises its height rather than expanding to the whole screen.

Written by the indexing model from the issue text.