fix: input输入框添加clearable属性并输入内容,hover时宽度进行变化

Author: liuzhe

style/web/components/input/_index.less

@@ -103,6 +103,11 @@
     cursor: pointer;
   }
 
+  .@{prefix}-input__suffix-clear-hidden {
+    opacity: 0;
+    visibility: hidden;
+  }
+
   // 输入框大小
   &.@{prefix}-size-l {
     height: @input-height-l;