BREAKING - Try-runtime: Use proper error types (#13993)

* Try-state: DispatchResult as return type

* try_state for the rest of the pallets

* pre_upgrade

* post_upgrade

* try_runtime_upgrade

* fixes

* bags-list fix

* fix

* update test

* warning fix

* ...

* final fixes 🤞

* warning..

* frame-support

* warnings

* Update frame/staking/src/migrations.rs

Co-authored-by: Liam Aharon <liam.aharon@hotmail.com>

* fix

* fix warning

* nit fix

* merge fixes

* small fix

* should be good now

* missed these ones

* introduce TryRuntimeError and TryRuntimeResult

* fixes

* fix

* removed TryRuntimeResult & made some fixes

* fix testsg

* tests passing

* unnecessary imports

* Update frame/assets/src/migration.rs

Co-authored-by: Keith Yeung <kungfukeith11@gmail.com>

---------

Co-authored-by: Liam Aharon <liam.aharon@hotmail.com>
Co-authored-by: Keith Yeung <kungfukeith11@gmail.com>

substrate/frame/executive/src/lib.rs

@@ -137,6 +137,9 @@ use sp_runtime::{
 };
 use sp_std::{marker::PhantomData, prelude::*};
 
+#[cfg(feature = "try-runtime")]
+use sp_runtime::TryRuntimeError;
+
 #[allow(dead_code)]
 const LOG_TARGET: &str = "runtime::executive";
 
@@ -338,7 +341,7 @@ where
 	/// `true`. Also, if set to `true`, it runs the `pre_upgrade` and `post_upgrade` hooks.
 	pub fn try_runtime_upgrade(
 		checks: frame_try_runtime::UpgradeCheckSelect,
-	) -> Result<Weight, &'static str> {
+	) -> Result<Weight, TryRuntimeError> {
 		if checks.try_state() {
 			let _guard = frame_support::StorageNoopGuard::default();
 			<AllPalletsWithSystem as frame_support::traits::TryState<System::BlockNumber>>::try_state(