Infoelement hide Custompoint

Requirements

• I searched through the issues if the issue already exists

Steps to reproduce

1. Create plot with curve
2. Add Infoelement
3. Set CustomPoint invisible
4. Save Project
5. Open Project again

Expected

The Custompoint is still not visible

Observed

The Custompoint is visible again

LabPlot Version

Release build 6cabc1e
Apr 18 2024, 14:58:50
System: Windows 11 Version 2009
Locale: English,United States (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-llp64
Kernel: winnt 10.0.22621
C++ Compiler: MSVC 19.29.30154.0
C++ Compiler Flags: /DWIN32 /D_WINDOWS /GR /EHsc /wd4250 /wd4251 /wd4396 /wd4661 /Zc:__cplusplus -W3 -DPSAPI_VERSION=1 /Zc:externC- -O2