Problem:
After installing Notepad++ v8.1 under an user account (with admin privilege), then switch to another user account (with or without admin privilege), launch Notepad++ and turn dark mode on. The dark theme on edit zone won't be applied.
Solution:
Notepad++ installer copies all theme files in installed directory instead of "%APPDATA%\Notepad++\themes\".
When theme is choosen or modified, it'll be saved in "%APPDATA%\Notepad++\themes\", and the saved theme file will override the original theme in installation directory.
New behaviour of theme:
Any theme selected via Style Configurator will be copied from its installation directory (C:\Program Files\Notepad++\themes\) into "%APPDATA%\Notepad++\themes\".
If the theme exists in "%APPDATA%\Notepad++\themes", the original one in s installation directory (C:\Program Files\Notepad++\themes) will be ignored.
Fix#10076, close#10077