Shortcut Mapper: Filter by Shortcuts doesn't work well for Scintilla Commands

[pryrt]

Description of the Issue

In v8.1.3, you added the ability to search by shortcuts, which is great. In all my tests in the main menu, macros, run commands, and plugin commands, it works as expected; but in the scintilla commands, it doesn't find anything from the

(Filtering the Scintilla Commands by some part of their SCI_ command name works just fine. Just not the new filtering by shorcut)

Steps to Reproduce the Issue

1. Settings > Shortcut Mapper > Scintilla Commands

   • Filter by +V does not find SCI_PASTE - Ctrl+V
   • Filter by +X does not find SCI_CUT - Ctrl+X
   • Filter by +C does not find SCI_COPY - Ctrl+C
   • Filter by +] does not find SCI_PARADOWN - Ctrl+] or SCI_PARADOWN_EXTEND - Ctrl+Shift+]
     
   • Filter by Shift does not find anything, even though many of the SCI commands have Shift in the keystrokes

2. To confirm that filtering does work with that style of filtering

   • Settings > Shortcut Mapper > Main Menu: Filter = +N finds NEW Ctrl+N, 1st Tab Ctrl+Numpad 1, and many others
   • Settings > Shortcut Mapper > Macros: Filter = +S finds Trim Trailing's Alt+Shift+S
   • Settings > Shortcut Mapper > Run commands: Filter = +F finds all of the default run commands Alt+F# shortcuts
   • Settings > Shortcut Mapper > Plugin Commands:
     • since there's no default commands, set Base64 Encode to Ctrl+Alt+Shift+]
     • filter by +], and it finds the newly-specified Base64 Encode
       
   • Filter by Shift in all the menus but Scintilla Commands finds all the shortcuts with the shift modifier

Expected Behavior

I expected step 1 to work similar to step 2, finding entries by shortcut as well as by

Actual Behavior

The filter is empty (shows nothing) on any of the tests in step 2

Debug Information

Notepad++ v8.1.4   (64-bit)
Build time : Aug 21 2021 - 13:04:59
Path : C:\usr\local\apps\npp\npp.8.1.4.portable.x64\notepad++.exe
Command Line : 
Admin mode : OFF
Local Conf mode : ON
Cloud Config : OFF
OS Name : Windows 10 Enterprise (64-bit) 
OS Version : 2009
OS Build : 19042.1165
Current ANSI codepage : 1252
Plugins : mimeTools.dll NppConverter.dll NppExport.dll 

or

Notepad++ v8.1.3   (64-bit)
Build time : Aug 10 2021 - 00:29:32
Path : C:\usr\local\apps\npp\npp.8.1.3.portable.x64\notepad++.exe
Command Line : 
Admin mode : OFF
Local Conf mode : ON
Cloud Config : OFF
OS Name : Windows 10 Enterprise (64-bit) 
OS Version : 2009
OS Build : 19042.1165
Current ANSI codepage : 1252
Plugins : mimeTools.dll NppConverter.dll NppExport.dll