Fix duplicating/copying TileMap

[AThousandShips]

Using force_parent_owned to prevent issues duplicating

Think this covers all cases

• Fixes: TileMap can't be duplicated or copied in editor #88104

[AThousandShips]

It seems this is relatively trivial, will look at a different fix leveraging is_owned_by_parent

Edit: Better solution, will push momentarily

[AThousandShips]

I've identified a few other places where force_parent_owned might be needed and will look at a PR for that too

[Mickeon]

I agree this solution is better. In the future, though, if/when layers are exposed, these snippets should be removed, otherwise you get into a nasty bug. Maybe adding a comment on the side can help?

[AThousandShips]

They shouldn't be removed even then, the layers would be doubled because the recreation of the data from the properties, I didn't realise that in my first attempt but it had extra layers because the map doesn't detect them being added, granted with more such details that would work but alone these lines shouldn't be removed even if the layer is exposed

[akien-mga]

Thanks!

[AThousandShips]

Thank you!