Error when testing emergency shutdown pallet with all features

[ETeissonniere]

Describe the bug

Compile error when testing emergency shutdown's benchmarks in a standalone manner.

To Reproduce

Steps to reproduce the behavior:

$ cargo test --all-features -p pallet-emergency-shutdown
   Compiling sp-api v2.0.0-alpha.7
error[E0432]: unresolved import `sp_core::to_substrate_wasm_fn_return_value`
  --> /Users/eliottteissonniere/.cargo/registry/src/github.com-1ecc6299db9ec823/sp-api-2.0.0-alpha.7/src/lib.rs:53:9
   |
53 | pub use sp_core::to_substrate_wasm_fn_return_value;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `to_substrate_wasm_fn_return_value` in the root

error: aborting due to previous error

For more information about this error, try `rustc --explain E0432`.
error: could not compile `sp-api`.

To learn more, run the command again with --verbose.

Expected behavior

We shouldn't have this error!