eeschema - alternative pin definition not shown in plotting result

Description

If a plot of the schematic is generated, and a component has an alternative pin definition set. The output file will show the default value, instead of the selected alternative.

Steps to reproduce

1. Create a schematic with a component, which has alternate pin definitions available.
2. Change a pin from the default to an alternative.
3. Plot the schematic
4. Compare the result of the plot with the schematic

KiCad Version

Application: KiCad

Version: (6.0.5), release build

Libraries:
	wxWidgets 3.0.5
	libcurl/7.83.1 OpenSSL/1.1.1o zlib/1.2.12 brotli/1.0.9 zstd/1.5.2 libidn2/2.3.2 libpsl/0.21.1 (+libidn2/2.3.0) libssh2/1.10.0 nghttp2/1.47.0

Platform: Linux 5.17.9-1-MANJARO x86_64, 64 bit, Little endian, wxGTK, xfce, x11

Build Info:
	Date: May  3 2022 02:43:29
	wxWidgets: 3.0.5 (wchar_t,wx containers,compatible with 2.8) GTK+ 3.24
	Boost: 1.78.0
	OCC: 7.5.3
	Curl: 7.83.0
	ngspice: 36
	Compiler: GCC 11.2.0 with C++ ABI 1016

Build settings:
	KICAD_USE_OCC=ON
	KICAD_SPICE=ON