Bus Elements Duplicated when Unfolding

Description

In KiCAD 7, the bus elements are duplicated when signal vectors are created. The listing has expandable groupings to select vector signals, but also lists them in the root of the menu. This behavior was not seen in KiCAD 6.

Steps to reproduce

1. Create a bus Alias with Net Members
2. Create a bus in the schematic editor with the type matching the alias name
3. Unfold signals from the bus

Creating Alias and Members

KiCAD 6

KiCAD 7

KiCad Version

Application: KiCad x64 on x64

Version: (7.0.0), release build

Libraries:
	wxWidgets 3.2.1
	FreeType 2.12.1
	HarfBuzz 5.0.1
	FontConfig 2.14.1
	libcurl/7.83.1-DEV Schannel zlib/1.2.13

Platform: Windows 10 (build 19044), 64-bit edition, 64 bit, Little endian, wxMSW

Build Info:
	Date: Feb 12 2023 01:35:19
	wxWidgets: 3.2.1 (wchar_t,wx containers)
	Boost: 1.80.0
	OCC: 7.6.2
	Curl: 7.83.1-DEV
	ngspice: 39
	Compiler: Visual C++ 1934 without C++ ABI

Build settings:
	KICAD_SPICE=ON