Where clause in Config trait is breaking when not specifying hooks in frame_support::pallet macro

[JuaniRios]

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• This is not a support question.

Description of bug

When not specifying hooks inside frame_support::pallet, there will be a default empty hook added. This default hook will break our compilation if we ever use a "where" clause in the Config trait. The error message is not helpful due to being behind a macro.

Steps to reproduce

1. Start with a pallet template
2. Add a where clause to Config where an associated type needs to implement a certain trait that is not already implemented.
3. Fix all other calls to T::Config to include the where clause

you will get something like:

     |
  22 |     #[pallet::pallet]
     |               ^^^^^^ the trait `From<u128>` is not implemented for `<T as frame_system::Config>::Index`

Temporary solution:
add an empty hooks block with the where clause:

	#[pallet::hooks]
	impl<T: Config> Hooks<BlockNumberFor<T>> for Pallet<T> where
		<Self as frame_system::Config>::Index: From<u128>
	{}

[JuaniRios]

@kianenigma as requested here I created the issue. Let me know if it needs some edits

[kianenigma]

@sam0x17 should be fairly easy. Fixed 🙈