Crash when opening footprint picker

Description

After upgrading from KiCad v8 to v9, any time I click on the icon in a footprint field, a "loading footprint libraries" window appears for a moment, and then KiCad crashes.

Steps to reproduce

1. Create a new project.

2. Open the schematic editor

3. Place any symbol.

4. Double click the symbol to open its properties.

5. Click the Footprint Value cell.

6. Click the library icon on the right of the cell.

   

Alternatively:

1. Create a new project.
2. Open the PCB editor.
3. Place any footprint.
4. Double click the footprint to open its properties.
5. Select Change Footprint.
6. Click the library icon to the right of any footprint library ID field.

KiCad Version

Application: KiCad x64 on x64

Version: 9.0.3, release build

Libraries:
	wxWidgets 3.2.8
	FreeType 2.13.3
	HarfBuzz 10.2.0
	FontConfig 2.15.0

Platform: Windows 11 (build 26100), 64-bit edition, 64 bit, Little endian, wxMSW

	wxWidgets: 3.2.8 (wchar_t,wx containers)
	Boost: 1.88.0
	OCC: 7.9.1
	Curl: 8.13.0-DEV
	ngspice: 44
	Compiler: Visual C++ 1942 without C++ ABI
	KICAD_IPC_API=ON

Locale: 
	Lang: en_US
	Enc: UTF-8
	Num: 1,234.5
	Encoded кΩ丈: D0BACEA9E4B888 (sys), D0BACEA9E4B888 (utf8)