Lint `bare_trait_objects` doesn't warn on traits used as types in paths

Example:
```rust
trait Method { fn method() {} }

trait Tr {}

impl Method for Tr {} // warning: trait objects without an explicit `dyn` are deprecated

fn main() {
    Tr::method; // No warning
}
```
According to the logic of the lint there should be a suggestion to rewrite `Tr::method` as `<dyn Tr>::method`.