fix: input search style bug #2077 (#2081)

close #2077

components/input/ClearableLabeledInput.jsx

@@ -93,6 +93,7 @@ const ClearableLabeledInput = {
         [`${prefixCls}-affix-wrapper-input-with-clear-btn`]:
           props.suffix && props.allowClear && this.$props.value,
       });
+
       return (
         <span class={affixWrapperCls} style={props.style}>
           {prefix}

components/input/Input.jsx

@@ -136,6 +136,7 @@ export default {
         'lazy',
         'size',
         'inputType',
+        'className',
       ]);
       const { stateValue, handleKeyDown, handleChange, size, disabled } = this;
       const inputProps = {

components/input/Search.jsx

@@ -170,9 +170,9 @@ export default {
         prefix: getComponentFromProp(this, 'prefix'),
         addonAfter: this.renderAddonAfter(prefixCls),
         addonBefore,
+        className: inputClassName,
       },
       attrs: this.$attrs,
-      class: inputClassName,
       ref: 'input',
       on: {
         pressEnter: this.onSearch,

components/input/inputProps.js

@@ -32,4 +32,5 @@ export default {
   },
   maxLength: PropTypes.number,
   loading: PropTypes.bool,
+  className: PropTypes.string,
 };