Compiler suggests invalid syntax when identfier used in format is not available

[WojciechMula]

Code

struct Foo {
    foo: String,
}

impl Foo {
    fn dump(self) {
        println!("foo = {foo:?}")
    }
}

mod inner {
    fn foo() {}
}

Current output

error[E0425]: cannot find value `foo` in this scope
  --> src/lib.rs:7:26
   |
7  |         println!("foo = {foo:?}")
   |                          ^^^
   |
note: function `crate::inner::foo` exists but is inaccessible
  --> src/lib.rs:12:5
   |
12 |     fn foo() {}
   |     ^^^^^^^^ not accessible
help: you might have meant to use the available field
   |
7  |         println!("foo = {self.foo:?}")
   |                          +++++

For more information about this error, try `rustc --explain E0425`.
error: could not compile `playground` (lib) due to 1 previous error

Desired output

No response

Rationale and extra context

The hint println!("foo = {self.foo:?}") is not a valid code. In this case I'd expect to see either println("foo = {0:?}", self.foo) or no hint at all.

Other cases

No response

Rust Version

Link to the playground: https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=c4d9e1a3e44b73f3e75bcc28014f25b1
Checked with both stable 1.76 and nightly 1.78.

Anything else?

No response

[fmease]

Closing as duplicate of #105520.