Ensure `name` is passed through to `select_field`

Fixes passthrough issue with `select_field` whereby the `name` attribute is not assigned.
Name exists twice on this line now, it's the second one and the last one. Is the problem that it expects a hash of `dropdown` rather than `properties`? There seems to be a mish-mash of property names which isn't good. I've never worked on these forms components, @remybach may know the reason why this has happened as I know he worked on the tooltips (which uses properties[:tooltip]), but short term you could do `name: dropdown[:name] || properties[:name]` if that works for you? At least that way it will take the dropdown value if it has it, rather than potentially overwriting it