perf(components): 优化 UseGuidance 组件，子步骤可以自定义内容偏移的值

src/layout/UseGuidance.vue

@@ -34,8 +34,10 @@ const currentComponent = computed<Component>(() => {
 });
 
 const contentStyle = computed<CSSProperties>(() => {
+  const contentOffset = props.steps[current.value].contentOffset ?? props.contentOffset;
+
   return {
-    paddingLeft: addUnit(props.contentOffset || 312),
+    paddingLeft: addUnit(contentOffset ?? 312),
   };
 });
 

src/types/index.ts

@@ -4,4 +4,5 @@ import type { StepProps } from 'ant-design-vue';
 export interface UseGuideStepItem extends StepProps {
   title: string;
   component: Component;
+  contentOffset?: number;
 }