Simulation: hidden signals re-shown when opening workbook

Description

Steps to reproduce

1.Start a simulation
2.Select some signals (amplitude and phase)
3.Hide the phase
4.Save the Workbook
5.close and reopen simulator and Load saved workbook.
6.Phase are there !

KiCad Version

Application: Editor schemi KiCad (64-bit)

Version: (6.99.0-4957-g01e517265f), release build

Libraries:
	wxWidgets 3.2.1
	FreeType 2.12.1
	HarfBuzz 5.0.1
	FontConfig 2.14.1
	libcurl/7.86.0-DEV Schannel zlib/1.2.13

Platform: Windows 11 (build 22000), 64-bit edition, 64 bit, Little endian, wxMSW

Build Info:
	Date: Dec 15 2022 06:39:46
	wxWidgets: 3.2.1 (wchar_t,wx containers)
	Boost: 1.80.0
	OCC: 7.6.2
	Curl: 7.86.0-DEV
	ngspice: 38
	Compiler: Visual C++ 1929 without C++ ABI

Build settings:
	KICAD_SPICE=ON