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v2: mshtml: Enumerate all own custom props if requested.
mshtml: Properly fill the window's script vars.
mshtml: Properly fill the window's constructors.
mshtml: Properly fill the constructor's "prototype" prop.
mshtml: Properly fill the prototype's "constructor" prop.
mshtml: Only fill the external props once, unless they are volatile.
mshtml: Fill the props in the host method instead of enumerating next prop.
https://gitlab.winehq.org/wine/wine/-/merge_requests/7986