fix: add missing postCtx (#14613)

baseapp/baseapp.go

@@ -724,8 +724,12 @@ func (app *BaseApp) runTx(mode runTxMode, txBytes []byte) (gInfo sdk.GasInfo, re
 		//
 		// Note: If the postHandler fails, we also revert the runMsgs state.
 		if app.postHandler != nil {
-			// Follow-up Ref: https://github.com/cosmos/cosmos-sdk/pull/13941
-			newCtx, err := app.postHandler(runMsgCtx, tx, mode == runTxModeSimulate, err == nil)
+			// The runMsgCtx context currently contains events emitted by the ante handler.
+			// We clear this to correctly order events without duplicates.
+			// Note that the state is still preserved.
+			postCtx := runMsgCtx.WithEventManager(sdk.NewEventManager())
+
+			newCtx, err := app.postHandler(postCtx, tx, mode == runTxModeSimulate, err == nil)
 			if err != nil {
 				return gInfo, nil, anteEvents, priority, err
 			}