In some cases the description is more useful than in others. But overall it's
nice if users can expect there to be some description instead of nothing.
The goal is also to not show the supported geometry types as a separate line
in the tooltip as that can be misleading sometimes and is often redundant
with the socket name and description already. Now the description is expected
to contain the relevant data for the user. It can also be more detailed than
just mentioning which geometry types are supported.
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