[REGRESSION] negative pixel size in the example project ENSO

Requirements

• I searched through the issues if the issue already exists

Steps to reproduce

1. Open the example project ENSO in the terminal

Expected

No new error messages in the output.

Observed

There are multiple errors related to the negative pix sizes used somewhere:

QFont::setPixelSize: Pixel size <= 0 (-1)
QFont::setPixelSize: Pixel size <= 0 (-1)
QFont::setPixelSize: Pixel size <= 0 (-1)
QFont::setPixelSize: Pixel size <= 0 (-1)
QFont::setPixelSize: Pixel size <= 0 (-1)
QFont::setPixelSize: Pixel size <= 0 (-1)
QFont::setPixelSize: Pixel size <= 0 (-1)

This was probably caused by the recent refactoring and the switch to point sizes. We need to check if something got broken here because of this.

LabPlot Version

LabPlot 2.11.80
Debug build 2.11.0-669-g5b4818af9 Dec 1 2024, 11:14:42 
System:
openSUSE Leap 15.6
Locale:
English,United Kingdom (Decimal point '.', Group separator ','
Number Settings:
Decimal point '.', Group separator ',', Exponential 'E', Zero digit '0', Percent '%', Positive/Negative sign '+'/'-' (Updated on restart)
Architecture:
x86_64-little_endian-lp64
Kernel: 
linux 6.4.0-150600.23.25-default