No deprecation warning for method call on deprecated type alias

[bluss]

The following should emit a deprecation warning (feature(deprecated))

#![feature(deprecated)]
pub mod lib {
    #[deprecated(note="don't use this")]
    pub type Foo = String;
}

fn main() {
    let t = ::lib::Foo::new(); // no warning
    println!("{}", t);
}

Type aliases can emit warnings, like in the following example, but I think it should warn as the use site too (marked "no warning"):

#![feature(deprecated)]
pub mod lib {
    #[deprecated(note="don't use this")]
    pub type Foo = String;
}

use lib::Foo; // WARNING use of deprecated item

fn main() {
    let s = Foo::new(); // no warning
    println!("{}", s);
}

[bluss]

cc @petrochenkov

[petrochenkov]

This is probably caused by the same reasons as #30209

[Mark-Simulacrum]

Closing.

warning: use of deprecated item: don't use this
 --> test.rs:7:13
  |
7 |     let t = ::lib::Foo::new(); // no warning
  |             ^^^^^^^^^^^^^^^
  |
  = note: #[warn(deprecated)] on by default