Fix "Show JSON Viewer" docking/dialog panel UI

[AntonDevil]

"Show JSON Viewer" docking/dialog panel does not show up or disappears or inactive.
When you open "Show JSON Viewer", it renders the panel and content but it is inactive and panel disappears when you hover mouse over it.
Not sure what the exact root cause is but updating external/npp files helped.
Tested in Notepad++ v8.8.6 (64-bit) on Windows 11 and plugin works fine now.

Copies are from plugintemplate:426b36a3 2025-10-11:

1. Update all external npp dependencies.
   • Docking.h
   • DockingDlgInterface.h
   • dockingResource.h
   • menuCmdID.h
   • Notepad_plus_msgs.h
   • PluginInterface.h
   • Added! Sci_Position.h - used in updated Scintilla.h; added to NPPJSONViewer.vcxproj.filters and NPPJSONViewer.vcxproj
   • Scintilla.h
   • StaticDialog.cpp
   • StaticDialog.h - updated "Notepad_plus_msgs.h" include
   • Window.h
   • Removed! URLCtrl.cpp - unused
   • Removed! URLCtrl.h - unused
2. Replaced DEPRECATED NPPM_ADDTOOLBARICON with NPPM_ADDTOOLBARICON_FORDARKMODE in NppJsonPlugin.cpp reusing same m_hMenuIcon.hToolbarIcon for toolbarIconsWithDarkMode for dark mode
3. Replaced DERPECATED NPPM_GETENABLETHEMETEXTUREFUNC with direct call to EnableThemeDialogTexture in SettingsDlg.cpp
4. Added uxtheme.lib as AdditionalDependencies to NPPJSONViewer.vcxproj to link newly added EnableThemeDialogTexture

References:

• JSON-Viewer
• How to develop a plugin
• plugintemplate
• notepad-plus-plus

[AntonDevil]

Alternative solution: #223