feat: descriptions support table-layout

docs/web/api/descriptions.en-US.md

@@ -26,6 +26,19 @@ spline: layout
 
 {{ column }}
 
+### Table Layout
+
+Sets the algorithm used to layout `table` cells, rows, and columns, exactly the same as the native table-layout css property. For more details, see [MDN](https://developer.mozilla.org/en-US/docs/Web/CSS/table-layout)。`fixed` by default.
+
+- `fixed`: In the fixed table layout algorithm, the width of each column is determined as follows:
+  - A column element with explicit width sets the width for that column.
+  - Otherwise, a cell in the first row with explicit width determines the width for that column.
+  - Otherwise, the column gets the width from the shared remaining horizontal space.
+
+- `auto`: The automatic table layout algorithm is used. The widths of the table and its cells are adjusted to fit the content.
+
+{{ table-layout }}
+
 ### Custom Style
 
 {{ custom-style }}

docs/web/api/descriptions.md

@@ -26,6 +26,19 @@ spline: layout
 
 {{ column }}
 
+### Table Layout
+
+用于设置底层 `table` 单元格、行和列的布局算法，与原生 table-layout css 属性完全一致。详情可参考 [MDN](https://developer.mozilla.org/en-US/docs/Web/CSS/table-layout)。默认为 `fixed`：
+
+- `fixed`: 使用固定表格布局算法。此模式下，每列的宽度按以下方式确定：
+  - 使用显示设定的列宽度
+  - 否则，使用第一行中显示设定的的单元格宽度作为对应列的宽度
+  - 否则，均分剩余宽度
+
+- `auto`: 使用自动表格布局算法。表格及其单元格的宽度会根据内容进行调整。
+
+{{ table-layout }}
+
 ### 自定义样式
 
 {{ custom-style }}

style/web/components/descriptions/_index.less

@@ -31,6 +31,10 @@
       color: @text-color-placeholder;
     }
 
+    &--fixed {
+      table-layout: fixed;
+    }
+
     &--border {
       > tbody {
         > tr {