Support Go to definition in Hover when show substitution.

[lh123]

mod A {
    pub(crate) struct Test;
}

mod B {
    pub(crate) struct Test;
}


fn test_substitution_hover<T>(t: T) {
    
}

fn test() {
    let a = A::Test;
    let b = B::Test;
    test_substitution_hover(a); // hover on test_substitution_hover show T = Test
    test_substitution_hover(b); // hover on test_substitution_hover show T = Test
}

In this case, the hover shows T = Test, which indeed causes confusion because we cannot differentiate between A::Test and B::Test via hover.

Displaying T = Test with the ability to click on Test to jump to its definition would help resolve this issue, while also showing the full definition of Test when hovering over it.

Specifically, something like the following could help: