Passing a unconstrained fn to an argument that expects fn errors

[asterite]

Aim

Passing a unconstrained fn to an argument that expects fn shouldn't be allowed, but currently it errors instead of giving a warning.

Expected Behavior

This code:

fn main() {
    foo(baz);
}

fn foo(f: fn(i32) -> i32) -> i32 {
    f(1)
}

unconstrained fn baz(x: i32) -> i32 {
    x + 1
}

gives a warning, not an error.

Bug

The code gives an error.

To Reproduce

Workaround

None

Workaround Description

No response

Additional Context

No response

Project Impact

None

Blocker Context

No response

Nargo Version

No response

NoirJS Version

No response

Proving Backend Tooling & Version

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Would you like to submit a PR for this Issue?

None

Support Needs

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