only patch encoding for tx service

Author: HuangYi

app/app.go

@@ -1327,7 +1327,23 @@ func (app *App) RegisterAPIRoutes(apiSvr *api.Server, apiConfig config.APIConfig
 
 // RegisterTxService implements the Application.RegisterTxService method.
 func (app *App) RegisterTxService(clientCtx client.Context) {
-	authtx.RegisterTxService(app.BaseApp.GRPCQueryRouter(), clientCtx, app.BaseApp.Simulate, app.interfaceRegistry)
+	// create new config instance to avoid affect the state machine
+	encodingConfig := evmenc.MakeConfig()
+	cdc := encodingConfig.Amino
+	interfaceRegistry := encodingConfig.InterfaceRegistry
+
+	app.BasicModuleManager.RegisterLegacyAminoCodec(cdc)
+	app.BasicModuleManager.RegisterInterfaces(interfaceRegistry)
+
+	// for decoding legacy transactions whose modules are removed
+	RegisterLegacyCodec(cdc)
+	RegisterLegacyInterfaces(interfaceRegistry)
+
+	clientCtx = clientCtx.
+		WithInterfaceRegistry(interfaceRegistry).
+		WithTxConfig(encodingConfig.TxConfig).
+		WithCodec(encodingConfig.Codec)
+	authtx.RegisterTxService(app.BaseApp.GRPCQueryRouter(), clientCtx, app.BaseApp.Simulate, interfaceRegistry)
 }
 
 // RegisterTendermintService implements the Application.RegisterTendermintService method.