WPF-910709 : Update the ToolBarStateChangedEvent description in ToolBarAdv's UG documentation in WPF.

[nithisam22]

Description:

Update the ToolBarStateChangedEvent description in ToolBarAdv's UG documentation in WPF.

[SyncfusionBuild]

Build Status: INPROGRESS 🔃
Build Location: 910709-Prepare-UG-document-for-the-StateChanged-event-in-the-WPF-ToolbarAdv-control

[SyncfusionBuild]

CI Status: SUCCESS ✅
Source Compilation: SUCCESS ✅
Build Location: 910709-Prepare-UG-document-for-the-StateChanged-event-in-the-WPF-ToolbarAdv-control
Technical Error(s): 0
Spelling Error(s): 0
Image Alt Text Error(s): 0
Image Size Error(s): 0
Image Name Error(s): 0
FT Layout Syntax Error(s): 0
Front matter Error(s): 0
File Path Error(s): 0
CodeSnippet File Path Missing Error(s): 0
Toc Anchor Tags Validation Error(s): 0

[Manivannan-E]

Changes are fine.