Board statistics - Drill hole table sizing

Description

19497

Steps to reproduce

1. Inspect -> Show Board Statistics -> Drill Holes tab;
2. Resize window;
3. BUG: Table size does not follow window size as expected.

KiCad Version

Application: KiCad PCB Editor (64-bit)

Version: (6.0.0-rc1-1-g4df25edb3d), 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: Nov 16 2021 00:01:03
	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