cross selection changes value from empty to ~ character

Description

Cross selection from pcbnew to eeschema changes the value string of symbols from complete empty to a ~ character.

Probably only relevant if cross probing is enabled and used.

Steps to reproduce

1. open attached project: cross_selection_tilde.zip
2. open schematic + pcb
3. locate IC5 + surrounding resistor on schematic root sheet. Notice the value is a complete empty string (examine with properties dialog or properties panel). (picture 1)
4. switch to pcbnew, locate R9-10-R11 (picture 2)
5. box-select R9-10-R11 (picture 3)
6. switch back to schematic, look at R9-10-R11 (picture 4): these resistors are now selected (thanks to cross-selection --> works!).
7. But look also at the value: the empty string is now replaced by a ~ character

KiCad Version

Application: KiCad Schematic Editor x64 on x64

Version: 9.99.0-3276-g8854646b55, release build

Libraries:
	wxWidgets 3.3
	FreeType 2.13.3
	HarfBuzz 10.2.0
	FontConfig 2.15.0

Platform: Windows 10 (build 19045), 64-bit edition, 64 bit, Little endian, wxMSW
OpenGL: Intel, Intel(R) HD Graphics 4000, 4.0.0 - Build 10.18.10.5161

	wxWidgets: 3.3.0 (wchar_t,STL containers)
	Boost: 1.88.0
	OCC: 7.9.1
	Curl: 8.13.0-DEV
	ngspice: 45.2
	Compiler: Visual C++ 1944 without C++ ABI
	KICAD_IPC_API=ON
	KICAD_USE_PCH=OFF

Locale: 
	Lang: en_GB
	Enc: UTF-8
	Num: 1,234.5
	Encoded кΩ丈: D0BACEA9E4B888 (sys), D0BACEA9E4B888 (utf8)