Properties Panel: NPTH can have nets (and other irrelevant properties) assigned

KiCad Version

Application: KiCad PCB Editor

Version: (6.99.0-4765-gd435ba6485), debug build

Libraries:
	wxWidgets 3.2
	FreeType 2.12.1
	HarfBuzz 2.7.4
	FontConfig 2.13.1

Platform: Linux 5.19.0-1009-lowlatency x86_64, 64 bit, Little endian, wxGTK, KDE, x11

	wxWidgets: 3.2.0 (wchar_t,wx containers) GTK+ 3.24
	Boost: 1.74.0
	OCC: 7.6.3
	Curl: 7.85.0
	ngspice: 30
	Compiler: GCC 12.2.0 with C++ ABI 1017

Build settings:
	KICAD_USE_EGL=ON
	KICAD_SPICE=ON
	KICAD_STDLIB_DEBUG=OFF
	KICAD_STDLIB_LIGHT_DEBUG=OFF
	KICAD_SANITIZE_ADDRESS=OFF
	KICAD_SANITIZE_THREADS=OFF