Dump the type name of redeclares in getModelInstance

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Fixes #10348

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@adeas31: This isn't quite as simple as we discussed, I realised that you probably need the fully qualified name of the class if you want to be able to e.g. call getModelInstance on it. So rather than just dumping the name as it is I look it up and dump the name from that instead. If the name couldn't be found then the name isn't dumped, since I guess you wouldn't have much use for the declared name in that case.

Also, I named the property "type" rather than "name", since that better reflects what it is.