feat: Dynamic dialog. Child component reference to be able to #14957
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Motivation:
With the current implementation is hard to do things like use the child component public API (i.e. to populate inputs) because the component is created asynchronously and trying to pass data using the angular lifecycle hooks to access the child component throws errors because often is undefined. Pass the data through the DynamicDialogConfig is a bit tricky.
So I made generic the open method of the DialogService and DynamicDialogRef. The open method of the DialogService now returns a typed DynamicDialogRef that has a new subject (onChildComponentLoaded) where the typed component instance is emitted when loaded.