feat：优化电子报间距，优化tabs显示错误问题

@@ -199,7 +199,7 @@ export struct ENewspaperListDialog {
                             .fontColor($r('app.color.color_222222'))
                             .fontWeight(600)// .maxLines(2)
                             .margin({
-                              bottom: 12
+                              bottom: 8
                             })
                         }
 

@@ -195,11 +195,11 @@ export struct BottomNavigationComponent {
   getBottomImageKnifeOption(navItem: BottomNavDTO, isSelect: boolean): ImageKnifeOption {
 
     let defaultIcon = this.getBottomLocalIcon(navItem, isSelect)
-    let url = this.getBottomIcon(navItem, isSelect)
+    let url = this.getBottomIcon(navItem, isSelect) as  string
     // Logger.info(TAG, `onChange111, 本地的地址: ${defaultIcon}`);
 
     let imageKnifeOption: ImageKnifeOption = {
-      loadSrc: url,
+      loadSrc: url.length > 0?url:defaultIcon,
       // 占位图使用本地资源
       placeholderSrc: defaultIcon,
       // 失败占位图使用本地资源
@@ -215,7 +215,7 @@ export struct BottomNavigationComponent {
     return imageKnifeOption
   }
 
-  private getBottomIcon(navItem: BottomNavDTO, isSelect: boolean): string | Resource {
+  private getBottomIcon(navItem: BottomNavDTO, isSelect: boolean): string {
     if (!navItem) {
       return ''
     }