Change type annotations of get_user_ids and create_item_from_stream_name
to accept CombinedPillContainer and InputPillItem<CombinedPillItem>
respectively.
`pill_typeahead`, and possibly other places, call `typeahead_source`
for what were typed as different pill widgets but is actually
all the same combined pill widget that has pills of users, user
groups, and streams. This commit fixes that typing issue in
preparaton for the upcoming conversion of `pill_typeahead` to
TypeScript.
The pill typeahead can have pills of three different types:
user, stream, and user_group. To be able to convert this
module to typescript, we need to add a `type` attribute
to differentiate between them.
This commit also adds a `user_or_mention` type to some
items in the composebox typeahead, because the composebox
typeahead shares some functions with the pill typeahead
and we need to be able to differentiate between the
pill types being passed there.
Anders Kaseorg
afeefuddin
evykassirer