Merge #11683

11683: fix: Stop wrapping ConstParam's default values in ConstArg r=Veykril a=steven-joruk

I came across this problem while implementing the assist for inlining type aliases. This was causing `ConstParam::default_val` to always return `None` for block expressions. The `const_arg_path` test was actually testing const params so I've updated that.

The only code that uses `default_val` right now is  the `extract_function` assist. I couldn't figure out how to hit the affected code path, if someone can give me hint I'll add a test.

This test in my WIP branch fails without this:
```rust
    #[test]
    fn param_expression() {
        check_assist(
            inline_type_alias,
            r#"
type A<const N: usize = { 1 }> = [u32; N];
fn main() {
    let a: $0A;
}
"#,
            r#"
type A<const N: usize = { 1 }> = [u32; N];
fn main() {
    let a: [u32; { 1 }];
}
"#,
        );
    }
```

Co-authored-by: Steven Joruk <steven@joruk.com>

0 files changed, 0 insertions, 0 deletions