Not load .grbjoj from KiCad app

Description

Double clicking a .grbjob of my project at KiCad app I got the message

The file is fine loaded from the Gerber View file menu. So, appear that is just a mistaken of the load function that mus by called for this type of file.

Reproduce

1. Generate the Gerber output with .gbrjob file from a project;
2. All file will be list on the KiCad app three;
3. Try yto open the .gbrjob file by double clicking.

KiCad Version

Application: KiCad Gerber Viewer

Version: 6.99.0-unknown-e140298878~117~ubuntu20.04.1, release build

Libraries:
	wxWidgets 3.0.4
	FreeType 2.10.1

Platform: Linux 5.13.0-30-generic x86_64, 64 bit, Little endian, wxGTK, ubuntu, x11

	wxWidgets: 3.0.4 (wchar_t,wx containers,compatible with 2.8) GTK+ 3.24
	Boost: 1.71.0
	OCC: 7.5.2
	Curl: 7.68.0
	ngspice: 31
	Compiler: GCC 9.3.0 with C++ ABI 1013

Build settings:
	KICAD_USE_OCC=ON
	KICAD_SPICE=ON