完善产品购买页面，抽取公共组件，优化导航链接

src/components/ui/form.tsx

@@ -28,7 +28,11 @@ function Form<T extends FieldValues>(rawProps: FormProps<T>) {
 
   return (
     <FormProvider {...form}>
-      <form {...props} onSubmit={form.handleSubmit(onSubmit)}>
+      <form {...props} onSubmit={event => {
+        event.preventDefault()
+        form.handleSubmit(onSubmit)(event)
+        event.stopPropagation()
+      }}>
         {children}
       </form>
     </FormProvider>