symbol fields table: grouping-error

Description

The symbol-fields table shows an "column can not be grouped" error at opening after rearranging the columns.

This happens not always, so follow the step exactly.

Steps to reproduce

1. open attached project, open schematic: symbol_fields_table_grouping.zip
2. open symbol field table
3. select preset "grouped by value" (see picture 1)
4. move mouse pointer over "Qty"-column
5. LMB-click+drag column to the left --> exchanging with "Value"-column
6. columns and contents exchange, so far so god (see picture 2)
7. close dialog with "OK"-button
8. reopen symbol fields table dialog: get error-message (see picture 3)
9. acknowledge error-message
10. now symbol fields table is shown, but ungrouped (compared to step5) (see picture 4)

KiCad Version

Application: KiCad Schematic Editor x64 on x64

Version: 7.99.0-1228-g50da4e483e, release build

Libraries:
	wxWidgets 3.2.2
	FreeType 2.12.1
	HarfBuzz 6.0.0
	FontConfig 2.14.1

Platform: Windows 10 (build 19045), 64-bit edition, 64 bit, Little endian, wxMSW

	wxWidgets: 3.2.2 (wchar_t,wx containers)
	Boost: 1.81.0
	OCC: 7.6.3
	Curl: 7.88.1-DEV
	ngspice: 40
	Compiler: Visual C++ 1936 without C++ ABI

Build settings: