[PATCH v3 0/8] MR4986: mshtml: MessageEvent improvements and misc.

[Gabriel Ivăncescu (＠insn)]

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  v3: mshtml/tests: Test builtin function default value getter with custom
      mshtml: Expose the IHTMLEventObj5 props to scripts.
      mshtml: Implement `initMessageEvent` for MessageEvents.
      mshtml: Implement `origin` prop for MessageEvents.
      mshtml: Implement `data` getter for MessageEvent objs.
      mshtml: Return E_ABORT from postMessage called without a caller
      mshtml: Implement `source` prop for MessageEvents.
      mshtml: Use a hook to implement postMessage.

https://gitlab.winehq.org/wine/wine/-/merge_requests/4986