3D viewer regression: Zooming does not center view around mouse pointer

Description

2442u

Steps to reproduce

1. Open 3D viewer zoomin and zoom out using mousewheel;
2. Zoomed view is no longer centered around mouse pointer, as was in previous nightlies;

KiCad Version

Application: KiCad 3D Viewer (64-bit)

Version: (5.99.0-12205-g8aba629fe5), release build

Libraries:
	wxWidgets 3.1.5
	libcurl/7.78.0-DEV Schannel zlib/1.2.11

Platform: Windows 10 (build 19042), 64-bit edition, 64 bit, Little endian, wxMSW

Build Info:
	Date: Sep  6 2021 08:59:44
	wxWidgets: 3.1.5 (wchar_t,wx containers)
	Boost: 1.76.0
	OCC: 7.5.0
	Curl: 7.78.0-DEV
	ngspice: 35
	Compiler: Visual C++ 1929 without C++ ABI

Build settings:
	KICAD_USE_OCC=ON
	KICAD_SPICE=ON