Invalid suggestion on anonymous lifetime parameter in precise capturing list if there are no input lifetimes

Reproducer:

fn f() -> impl Sized + use<'_> {}

Current output:

error[E0106]: missing lifetime specifier
 --> src/lib.rs:1:28
  |
1 | fn f() -> impl Sized + use<'_> {}
  |                            ^^ expected named lifetime parameter
  |
  = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`, or if you will only have owned values
  |
1 | fn f() -> impl Sized + use<'static> {}
  |                            ~~~~~~~

error: expected lifetime parameter in `use<...>` precise captures list, found `'_`
 --> src/lib.rs:1:28
  |
1 | fn f() -> impl Sized + use<'_> {}
  |                            ^^

Expected:

1. Don't suggest use<'static> which is invalid
2. One diagnostic instead of two (while keeping the good hint this function's return type contains a borrowed value, but there is no value for it to be borrowed from)

Start with the reproducer in src/lib.rs and run it to compare the current diagnostics with the expected output. Trace the compiler diagnostic paths for an anonymous lifetime in a precise use<> capturing list, then ensure the invalid 'static suggestion is removed and the duplicate errors become one while preserving the borrowed-value hint.