Bug 54109492: [React Native Gallery -> VirtualizedList]: Incorrect control type is defined for the items present under "A VirtualizedList with single selection support, heading".

[Yajur-Grover]

Build Details:
OS Version: Dev (OS Build 27695.1000)
App: React Native Gallery
App Version: 1.0.18.0
React Native Windows Version: 0.75.0
AT: Screen Reader

Pre-Requisite:
Turn on Narrator (Ctrl + Win + Enter).

Repro-Steps:
Launch the React Native Gallery app.
Navigate to ‘All samples’ button present in left navigation pane and invoke it.
Navigate to ‘VirtualizedList’ button present under “Collection” group and invoke it.
Navigate using tab key to any item present under "A VirtualizedList with single selection support, heading".
Listen to narrator announcement.
Actual Result:
Incorrect control type is defined for the items present under "A VirtualizedList with single selection support, heading". When user navigates to any item narrator is announcing as "Item 1, customized", and fails to announce the position of the list item.

Expected Result:
Proper control type should be defined for the items present under "A VirtualizedList with single selection support, heading". When user navigates to any item narrator should announce the proper control type and position of the item as "Item 1, list 1 of 10".

User Impact:
Users with visual impairment who rely on screen reader will be misguided if narrator announces incorrect control type of the item.

Link to ADO bug: https://dev.azure.com/microsoft/OS/_workitems/edit/54109492