Font size menu actions w/ pixel size

[zdomke]

Describe the bug

My application has defines fonts using pixel size instead of point size. When I change the font size using the menu actions I get an error similar to the one below:
QFont::setPointSizeF: Point size <= 0 (-0.000000), must be greater than 0

Steps to reproduce

1. Use a stylesheet for the app that defines a font-size as a pixel size:
   font-size: 12px
2. Attempt to increase/decrease/reset the font size (Ctrl+= / Ctrl+- / Ctrl-0)
3. Notice the errors printed to terminal

Expected behavior

The font should change and there should be no errors printed to terminal.

Operating System.

Linux

OS Version Details.

No response

Python Version

Python 3.12.11

Packages Version

PyDM: 1.27.1

Additional context.

No response