Merge pull request from GHSA-86h5-xcpx-cfqc

* check undelegation after redelegation

* add comment

* using app v1

* set up test

* update test

* Update x/staking/keeper/slash.go

Co-authored-by: Aleksandr Bezobchuk <alexanderbez@users.noreply.github.com>

* use switch inside slashing logic

* update slash redelegation test

---------

Co-authored-by: Hieu Vu <72878483+hieuvubk@users.noreply.github.com>
Co-authored-by: Aleksandr Bezobchuk <alexanderbez@users.noreply.github.com>
Co-authored-by: Julien Robert <julien@rbrt.fr>

testutil/sims/app_helpers.go

@@ -17,11 +17,13 @@ import (
 	banktypes "cosmossdk.io/x/bank/types"
 	stakingtypes "cosmossdk.io/x/staking/types"
 
+	coreheader "cosmossdk.io/core/header"
 	"github.com/cosmos/cosmos-sdk/client/flags"
 	"github.com/cosmos/cosmos-sdk/codec"
 	codectypes "github.com/cosmos/cosmos-sdk/codec/types"
 	cryptocodec "github.com/cosmos/cosmos-sdk/crypto/codec"
 	"github.com/cosmos/cosmos-sdk/crypto/keys/secp256k1"
+
 	"github.com/cosmos/cosmos-sdk/runtime"
 	servertypes "github.com/cosmos/cosmos-sdk/server/types"
 	"github.com/cosmos/cosmos-sdk/testutil/mock"
@@ -107,6 +109,35 @@ func SetupAtGenesis(appConfig depinject.Config, extraOutputs ...interface{}) (*r
 	return SetupWithConfiguration(appConfig, cfg, extraOutputs...)
 }
 
+// NextBlock starts a new block.
+func NextBlock(app *runtime.App, ctx sdk.Context, jumpTime time.Duration) (sdk.Context, error) {
+	_, err := app.FinalizeBlock(&abci.RequestFinalizeBlock{Height: ctx.BlockHeight(), Time: ctx.BlockTime()})
+	if err != nil {
+		return sdk.Context{}, err
+	}
+	_, err = app.Commit()
+	if err != nil {
+		return sdk.Context{}, err
+	}
+
+	newBlockTime := ctx.BlockTime().Add(jumpTime)
+
+	header := ctx.BlockHeader()
+	header.Time = newBlockTime
+	header.Height = header.Height + 1
+
+	newCtx := app.BaseApp.NewUncachedContext(false, header).WithHeaderInfo(coreheader.Info{
+		Height: header.Height,
+		Time:   header.Time,
+	})
+
+	if err != nil {
+		return sdk.Context{}, err
+	}
+
+	return newCtx, err
+}
+
 // SetupWithConfiguration initializes a new runtime.App. A Nop logger is set in runtime.App.
 // appConfig defines the application configuration (f.e. app_config.go).
 // extraOutputs defines the extra outputs to be assigned by the dependency injector (depinject).