kicad-cli: pcb export pdf accept different layer names than displayed in gui

Description

When exporting pcb into pdf, some of the layer are expected with different names than in gui application. Expected behavior is that kicad-cli use same names as the gui application.

kicad gui      kicad-cli
------------------------
User.Drawings  Dwgs.User
User.Comments  Cmts.User
User.Eco1      Eco1.User
User.Eco2      Eco2.User

Steps to reproduce

kicad-cli pcb export pdf -o fig/pcb_drawing.pdf ./light_ring_3535x6.kicad_pcb -l User.Drawings,User.Comments,User.Eco1,User.Eco2
Invalid layer name "User.Drawings"
Invalid layer name "User.Comments"
Invalid layer name "User.Eco1"
Invalid layer name "User.Eco2"
At least one or more layers must be specified

KiCad Version

Application: KiCad x86_64 on x86_64

Version: 7.0.1, release build

Libraries:
	wxWidgets 3.2.2
	FreeType 2.13.0
	HarfBuzz 7.1.0
	FontConfig 2.14.2
	libcurl/8.0.1 OpenSSL/3.0.8 zlib/1.2.13 brotli/1.0.9 zstd/1.5.4 libidn2/2.3.4 libpsl/0.21.2 (+libidn2/2.3.4) libssh2/1.10.0 nghttp2/1.52.0

Platform: ArcoLinux, 64 bit, Little endian, wxGTK, qtile, x11

Build Info:
	Date: Mar 12 2023 01:48:29
	wxWidgets: 3.2.2 (wchar_t,wx containers) GTK+ 3.24
	Boost: 1.81.0
	OCC: 7.6.3
	Curl: 7.88.1
	ngspice: 39
	Compiler: GCC 12.2.1 with C++ ABI 1017

Build settings:
	KICAD_USE_EGL=ON
	KICAD_SPICE=ON