chore: fix caching issue for conditional merchant creation

[NishantJoshi00]

Description

There is an issue with the consistency of nested types for caching, the issue lies in the way Deref works and how the traits are implemented.

example:

struct A;
struct B;
struct C;

trait MyTrait {}

impl MyTrait for C {}

impl Deref for A {
	type Target = B;
}
impl Deref for B {
	type Target = C;
}

fn handle<X, Y>(data: X)
where
	X: Deref<Target = Y>,
	Y: MyTrait
{}

In this scenerio struct of type B can be passed to the function handle without any issue, but when trying to pass A you will get an error:

error[E0277]: the trait bound `B: MyTrait` is not satisfied
   --> src/main.rs:112:5
    |
112 |     handle(A);
    |     ^^^^^^ the trait `MyTrait` is not implemented for `B`
    |
    = help: the trait `MyTrait` is implemented for `C`
note: required by a bound in `handle`
   --> src/main.rs:108:5
    |
105 | fn handle<X, Y>(_data: X)
    |    ------ required by a bound in this function
...
108 |     Y: MyTrait
    |        ^^^^^^^ required by this bound in `handle`

---

This example describes the situation with caching, where as the intermediate layers are only implementing Deref for the internal Storage, and does not auto implement the traits that are implemented on Storage. This issue will be mitigated once rust stabalizes specialization.

Tracking issue for specialization: rust-lang/rust#31844