[modal] ns-dark not applied to top element

[farfromrefug]

I am using latest of everything

If you run the attached example:

• click the button => opened page is not themed but child label is
• change the code to open modal modalFrame/modalFrame
• click the button => opened page is themed but child label is
  NSPlayground 2.zip

I think the issue is that the top/root view opened in modal is not applied ns-dark.

I also see that behavior in my nativescript-material-bottomsheet and nativescript-material-dialogs when i show custom view inside dialog or bottom sheet.
https://github.com/Akylas/nativescript-material-components/blob/2ed3d870bdce10e66fa2bcda4d936da499690f39/src/bottomsheet/bottomsheet-common.ts#L134
BTW it happens on both platforms

[NavruzbekNoraliev]

same issue, bottom sheet doesn't read ns dark styles

[Bezlepkin]

Same issue in modalDialog....

[rigor789]

Fixed in #10201