docs: Clarify that inputs use set syntax to receive dict in function (#12619)
The documentation section "Function Input List vs Dict" was confusing
because it described the input syntax as passing a "set" but called
the section "List vs Dict". The actual behavior is:
- inputs=[a, b] (list) → function receives separate arguments
- inputs={a, b} (set) → function receives a dictionary
Updated the section title to "Function Input List vs Set" and clarified
that when you pass a set, the function receives a dictionary. Also
updated the Chinese translation.
Fixes #11176