ParseErrors for unroll_for! with shorthand .. range using imported constant

[mikex-oss]

Describe the bug

proc Foo {
    config() {  }

    init { () }

    next(state: ()) {
        unroll_for! (i, _): (u32, ()) in u32:0..bar::N {
            let tok_ = join();
        }(());
    }
}

where in bar module:

pub const N = u32:32;

causes the error:

Expected 'identifier', got 'keyword:let': Expected struct instance's member name
=== Source Location Trace: === 
xls/dslx/frontend/bindings.h:59
xls/dslx/frontend/parser.cc:1079
...

Removing the statement inside interestingly causes a different error:

Expected '{', got ';'
=== Source Location Trace: === 
xls/dslx/frontend/bindings.h:59
xls/dslx/frontend/token_parser.cc:102
xls/dslx/frontend/parser.cc:3499

To Reproduce

Run the above proc through the DSLX formatter or compile it.

Expected behavior
This should work just as range(u32:0, bar::N) does.