feat!: add error handling to staking hooks (cosmos#9571)

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## Description

- Adds error handling for staking hooks

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- [x] added `!` to the type prefix if API or client breaking change
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- [ ] added a changelog entry to `CHANGELOG.md`
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- [x] updated the relevant documentation or specification
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- [ ] confirmed `!` in the type prefix if API or client breaking change
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- [ ] reviewed state machine logic
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- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)

export.go

@@ -109,7 +109,9 @@ func (app *SimApp) prepForZeroHeightGenesis(ctx sdk.Context, jailAllowedAddrs []
 		feePool.CommunityPool = feePool.CommunityPool.Add(scraps...)
 		app.DistrKeeper.SetFeePool(ctx, feePool)
 
-		app.DistrKeeper.Hooks().AfterValidatorCreated(ctx, val.GetOperator())
+		if err := app.DistrKeeper.Hooks().AfterValidatorCreated(ctx, val.GetOperator()); err != nil {
+			panic(err)
+		}
 		return false
 	})