修复归档仓库 Issue 时间线过长插入归档信息框

styles/components/heatmap.ts

@@ -93,7 +93,7 @@ export const activity = css`
       }
     }
     > .page.buttons {
-      border-top: 1px solid ${themeVars.color.light.border};
+      border-top: 1px solid ${themeVars.color.secondary.self};
       padding: 12px 0px;
     }
   }

styles/components/issue.ts

@@ -467,6 +467,11 @@ export const prMerge = css`
 export const timeline = css`
   .repository.view.issue {
     .comment-list {
+      // 时间线本线
+      .timeline::before {
+        // 不遮挡归档信息框, 归档信息框背景色有透明度时会漏出线
+        height: calc(100% - 62px);
+      }
       .timeline-item,
       .timeline-item-group {
         padding: 16px 0;