RME upgrade, fix autoFocus logic

app/scenes/Document/Document.js

@@ -347,7 +347,6 @@ class DocumentScene extends React.Component<Props> {
                 onCancel={this.onDiscard}
                 onShowToast={this.onShowToast}
                 readOnly={!this.isEditing}
-                autoFocus={!document.text}
                 toc
               />
             </MaxWidth>

app/scenes/Document/components/Editor.js

@@ -41,10 +41,20 @@ schema.document.normalize = (
 class Editor extends React.Component<Props> {
   editor: *;
 
+  componentDidMount() {
+    if (!this.props.defaultValue) {
+      this.focusAtStart();
+    }
+  }
+
   setEditorRef = (ref: RichMarkdownEditor) => {
     this.editor = ref;
   };
 
+  focusAtStart = () => {
+    if (this.editor) this.editor.focusAtStart();
+  };
+
   focusAtEnd = () => {
     if (this.editor) this.editor.focusAtEnd();
   };