Confusing XlsTypeError when identical structs are defined in two separate files

[m-torhan]

Describe the bug
When two identical structs are defined in separate files and one is used as the other, the resulting XlsTypeError is confusing.

To Reproduce
Steps to reproduce the behavior:

1. Write the following code:

foo.x

import bar;

struct Bar {
    a: u1,
}

fn fn_foo() {
    let b = Bar { a: u1:0 };
    bar::fn_bar(b);
}

bar.x

struct Bar {
    a: u1,
}

pub fn fn_bar(arg: Bar) {}

2. Build DSLX target.

xls_dslx_library(
    name = "bar_dslx",
    srcs = ["bar.x"],
)

xls_dslx_library(
    name = "foo_dslx",
    srcs = ["foo.x"],
    deps = ["bar_dslx"],
)

bazel build //:foo_dslx

3. Observe the error message:

foo.x:9:17-9:18
0007: fn fn_foo() {
0008:     let b = Bar { a: u1:0 };
0009:     bar::fn_bar(b);
~~~~~~~~~~~~~~~~~~~~~~^ XlsTypeError: Mismatch between parameter and argument types.
Type mismatch:
   Bar { a: uN[1] }
vs Bar { a: uN[1] }
0010: }
Error parsing and type checking DSLX source file: foo.x
Target //:foo_dslx failed to build

Expected behavior
The error should contain information why these types differ.

Environment (this can be helpful for troubleshooting):

• OS: Arch Linux x86_64
• Kernel version: 6.9.6-arch1-1
• XLS hash: def000aaa4ec5745397a21c4eeb051760f08e855