Stop passing in app PreBlocker to slinky VE handler

protocol/app/app.go

@@ -1542,7 +1542,12 @@ func (app *App) initOracle(pricesTxDecoder process.UpdateMarketPriceTxDecoder) {
 			compression.NewDefaultVoteExtensionCodec(),
 			compression.NewZLibCompressor(),
 		),
-		app.PreBlocker,
+		// We are not using the slinky PreBlocker, so there is no need to pass in PreBlocker here.
+		// Currently, the clob PreBlocker assumes that it will only be called during the normal ABCI
+		// PreBlocker step, so passing in the app PreBlocker will cause issues.
+		func(_ sdk.Context, _ *abci.RequestFinalizeBlock) (*sdk.ResponsePreBlock, error) {
+			return nil, nil
+		},
 		app.oracleMetrics,
 	)