fix: update spin steps

components/spin/Spin.jsx

@@ -41,10 +41,11 @@ export default {
   }),
   data () {
     const { spinning, delay } = this
+    this.debounceTimeout = null
+    this.delayTimeout = null
     return {
       sSpinning: spinning && !shouldDelay(spinning, delay),
-      debounceTimeout: null,
-      delayTimeout: null,
+
     }
   },
   mounted () {

components/steps/index.jsx

@@ -34,13 +34,13 @@ const Steps = {
     const props = getOptionProps(this)
     const { prefixCls } = props
     const icons = {
-      finish: <Icon type='check' className={`${prefixCls}-finish-icon`} />,
-      error: <Icon type='close' className={`${prefixCls}-error-icon`} />,
+      finish: <Icon type='check' class={`${prefixCls}-finish-icon`} />,
+      error: <Icon type='close' class={`${prefixCls}-error-icon`} />,
     }
     const stepsProps = {
       props: {
-        ...props,
         icons,
+        ...props,
       },
       on: this.$listeners,
       scopedSlots: this.$scopedSlots,