refactor: remove x/exp dep (#21281)

baseapp/baseapp.go

@@ -4,8 +4,9 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"maps"
 	"math"
-	"sort"
+	"slices"
 	"strconv"
 	"sync"
 
@@ -14,7 +15,6 @@ import (
 	"github.com/cometbft/cometbft/crypto/tmhash"
 	dbm "github.com/cosmos/cosmos-db"
 	"github.com/cosmos/gogoproto/proto"
-	"golang.org/x/exp/maps"
 	"google.golang.org/protobuf/reflect/protoreflect"
 
 	"cosmossdk.io/core/header"
@@ -340,8 +340,7 @@ func (app *BaseApp) MountTransientStores(keys map[string]*storetypes.TransientSt
 // MountMemoryStores mounts all in-memory KVStores with the BaseApp's internal
 // commit multi-store.
 func (app *BaseApp) MountMemoryStores(keys map[string]*storetypes.MemoryStoreKey) {
-	skeys := maps.Keys(keys)
-	sort.Strings(skeys)
+	skeys := slices.Sorted(maps.Keys(keys))
 	for _, key := range skeys {
 		memKey := keys[key]
 		app.MountStore(memKey, storetypes.StoreTypeMemory)