Undo on bulk edit symbol fields scrambles descriptor and footprints for entire project
# Description
Pressing undo on the bulk edit symbol fields menu can scramble the footprints, values etc for the entire project. I expected the action the be undone, it actually changed over 100 footprints and also scrambled the value information.
# Steps to reproduce
1. Make a new project, add a couple of components (ensure you have a pair of components with the same fields, eg 2 identical caps)
2. Open the bulk edit symbol fields menu
3. Click on the edit tab
4. Change the value of the pair of components (in this example C2-\>C27)
{width=900 height=163}
5. Expand the pair
{width=900 height=166}
6. Hit Control-Z
{width=900 height=174}
7. Every line under the one you just edited is now scrambled
# KiCad Version
```
Application: KiCad x64 on x64
Version: 10.0.0, release build
Libraries:
wxWidgets 3.3.2
FreeType 2.13.3
HarfBuzz 12.3.0
FontConfig 2.17.1
libcurl/8.18.0 Schannel zlib/1.3.1
Platform: Windows 11 (build 26200), 64-bit edition, 64 bit, Little endian, wxMSW
OpenGL: Intel, Intel(R) Arc(TM) 140T GPU (16GB), 4.6.0 - Build 32.0.101.8132
Build Info:
Date: Mar 25 2026 23:20:32
wxWidgets: 3.3.2 (wchar_t,STL containers)
Boost: 1.90.0
OCC: 7.9.2
Curl: 8.18.0
ngspice: 45.2
Compiler: Visual C++ 1944 without C++ ABI
KICAD_IPC_API=ON
KICAD_USE_PCH=OFF
Locale:
Lang: en_GB
Enc: UTF-8
Num: 1,234.5
Encoded кΩ丈: D0BACEA9E4B888 (sys), D0BACEA9E4B888 (utf8)
```
issue