[flow] Allow FloatingMarker's to receive more complex items than a string

[NameFILIP]

Current Behavior

Floating Marker (https://baseweb.design/components/floating-marker/) type definition only allows passing a string content.

Expected Behavior

Modify the type definition to allow passing more complex elements like links, etc (React.Node type).

Your Environment

Tech	Version
Base UI	v10.11.1

• [ + ] I have searched the issues of this repository and believe that this is not a duplicate.