Mandate weight annotation (#5357)

* Disallow default weight

* Fix build and test

* Fix tests

* Fix another beloved ui test.

* fix beloved trybuild tests

* fix treasury?

* Final test fix

* Fix build

* Fix another one

* Fix

* More doctest fix

substrate/frame/support/src/metadata.rs

@@ -336,6 +336,7 @@ mod tests {
 
 	mod event_module {
 		use crate::dispatch::DispatchResult;
+		use crate::weights::SimpleDispatchInfo;
 
 		pub trait Trait: super::system::Trait {
 			type Balance;
@@ -353,6 +354,7 @@ mod tests {
 			pub struct Module<T: Trait> for enum Call where origin: T::Origin {
 				type Error = Error<T>;
 
+				#[weight = SimpleDispatchInfo::default()]
 				fn aux_0(_origin) -> DispatchResult { unreachable!() }
 			}
 		}