feat: unordered list default style

src/editor/core/draw/particle/ListParticle.ts

@@ -78,9 +78,7 @@ export class ListParticle {
     if (startElement.value !== ZERO || startElement.listWrap) return
     let text = ''
     if (startElement.listType === ListType.UL) {
-      if (startElement.listStyle) {
-        text = ulStyleMapping[<UlStyle><unknown>startElement.listStyle] || ulStyleMapping[UlStyle.DISC]
-      }
+      text = ulStyleMapping[<UlStyle><unknown>startElement.listStyle] || ulStyleMapping[UlStyle.DISC]
     } else {
       text = `${listIndex! + 1}${KeyMap.PERIOD}`
     }

src/editor/utils/element.ts

@@ -56,8 +56,10 @@ export function formatElementList(elementList: IElement[], options: IFormatEleme
         const titleOptions = editorOptions.title
         for (let v = 0; v < valueList.length; v++) {
           const value = valueList[v]
-          value.titleId = titleId
-          value.level = el.level
+          if (el.level) {
+            value.titleId = titleId
+            value.level = el.level
+          }
           // 文本型元素设置字体及加粗
           if (isTextLikeElement(value)) {
             if (!value.size) {