Feature request: Improve import assist by considering types

Today I (re)wrote some code like this:

match channel_sender.try_send(value) {
    Err(TrySendError::Full(_)) => todo!(),
    // ...
}

And used Ctrl+. to import TrySendError. There were multiple choices due to dependencies on all of std, tokio and async-channel. It would have been nice to not have to navigate the Import TrySendError sub-menu where I had to choose between the various available types, since RA correctly figured out that try_send is from tokio and returns Result<(), tokio::sync::mpsc::error::TrySendError<T>>.

Reproduce the Ctrl+. import-assist flow with the shown tokio try_send example and inspect how the available TrySendError candidates are presented. Use the inferred return type to determine when one import is unambiguous; done means the tokio type is selected without the submenu while valid alternatives remain available when the type is not decisive.