fix: input small height not correct #3396

Author: tangjinzhou

components/style/themes/default.less

@@ -327,7 +327,7 @@
 @input-padding-horizontal-sm: @control-padding-horizontal-sm - 1px;
 @input-padding-horizontal-lg: @input-padding-horizontal;
 @input-padding-vertical-base: 4px;
-@input-padding-vertical-sm: 1px;
+@input-padding-vertical-sm: 0px;
 @input-padding-vertical-lg: 6.5px;
 @input-placeholder-color: hsv(0, 0, 75%);
 @input-color: @text-color;