Fix line height of cascader label

Cascader label isn't aligned in its parent element.

packages/theme-default/src/cascader.css

@@ -34,7 +34,7 @@
       left: 0;
       top: 0;
       height: 100%;
-      line-height: 34px;
+      line-height: 36px;
       padding: 0 25px 0 10px;
       color: var(--input-color);
       width: 100%;