refactor(Layout): enable flex by default, remove type prop

src/row/index.less

@@ -1,19 +1,7 @@
 @import '../style/var';
 
 .van-row {
-  &::after {
-    display: table;
-    clear: both;
-    content: '';
-  }
-
-  &--flex {
-    display: flex;
-
-    &::after {
-      display: none;
-    }
-  }
+  display: flex;
 
   &--justify-center {
     justify-content: center;

src/row/index.tsx

@@ -23,7 +23,6 @@ export type RowJustify =
 
 export default createComponent({
   props: {
-    type: String as PropType<'flex'>,
     align: String as PropType<RowAlign>,
     justify: String as PropType<RowJustify>,
     tag: {
@@ -87,15 +86,12 @@ export default createComponent({
     linkChildren({ spaces });
 
     return () => {
-      const { tag, type, align, justify } = props;
-      const flex = type === 'flex';
-
+      const { tag, align, justify } = props;
       return (
         <tag
           class={bem({
-            flex,
-            [`align-${align}`]: flex && align,
-            [`justify-${justify}`]: flex && justify,
+            [`align-${align}`]: align,
+            [`justify-${justify}`]: justify,
           })}
         >
           {slots.default?.()}