905715: Corrected the css code snippet for selected item customization in ListView component.

[Sureshrajan-18]

Corrected the css code snippet for selected item customization in Blazor ListView component.

[SyncfusionBuild]

Build Status: INQUEUE 🕒
Build Location: 905715-LV-Hf

[SyncfusionBuild]

Build Status: INPROGRESS 🔃
Build Location: 905715-LV-Hf

[SyncfusionBuild]

CI Status: SUCCESS ✅
Source Compilation: SUCCESS ✅
Build Location: 905715-LV-Hf
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