[1.3.0] Warning CS0109: The member does not hide an accessible member

[asklar]

Describe the bug
Used cswinrt 1.3.0 to generate a projection of a winrt library (React native for Windows).
The generated code contains a warning:

3>F:\rnw\vnext\build\x64\Release\Microsoft.ProjectReunion.ReactNative\Microsoft.ProjectReunion.ReactNative\bin\Microsoft.ReactNative.cs(3454,51,3454,59): warning CS0109: The member 'ViewPanel._factory' does not hide an accessible member. The new keyword is not required.

To Reproduce
ping me on teams :)

Expected behavior
No warnings

Version Info
cswinrt 1.3.0
.net 5

Additional context