Cannot derive `Reflect` on a struct with `Option<Box<T>>` field where `T: Reflect`

[umut-sahin]

Bevy version

v0.12

What you did

#[derive(Reflect)]
pub struct Foo<T: Reflect> {
    pub problem: Option<Box<T>>,
}

What went wrong

error[E0277]: the trait bound `std::boxed::Box<T>: TypePath` is not satisfied
  --> src/bug.rs:5:18
   |
25 |     pub problem: Option<Box<T>>,
   |                  ^^^^^^^^^^^^^^ the trait `TypePath` is not implemented for `std::boxed::Box<T>`
   |

Additional information

This was compiling on v0.11.

[MrGVSV]

Related to #9929 and #6098