Compile crash on `from {}`

[vanillajonathan]

What happened?

When using from {} or from [] the compiler crashes.

The application panicked (crashed).
Message:  called `Option::unwrap()` on a `None` value
Location: prqlc/prqlc/src/semantic/resolver/functions.rs:279

PRQL input

from {}

SQL output

-- None

Expected SQL output

No response

MVCE confirmation

• Minimal example
• New issue

Anything else?

No response

[m-span]

#4538 created to temporarily prevent crash

now this input returns:
Error: internal compiler error; tracked at https://github.com/PRQL/prql/issues/4317