core&ui: support set pretest to false

packages/ui-default/components/scratchpad/ScratchpadToolbarContainer.jsx

@@ -99,6 +99,7 @@ export default connect(mapStateToProps, mapDispatchToProps)(class ScratchpadTool
     if (UiContext.pdoc.config?.type === 'remote_judge') {
       if (window.LANGS[this.props.editorLang].pretest) canUsePretest = true;
     }
+    if (window.LANGS[this.props.editorLang].pretest === false) canUsePretest = false;
     return (
       <Toolbar>
         {canUsePretest && (

packages/ui-default/components/scratchpad/reducers/ui.js

@@ -55,6 +55,10 @@ export default function reducer(state = {
   case 'SCRATCHPAD_POST_SUBMIT_PENDING': {
     return {
       ...state,
+      records: {
+        ...state.records,
+        visible: true,
+      },
       isPosting: true,
     };
   }