style(frontend): C-3 补漏·service-role-apply role-card transition:all 显式化

.selected 改 background+border-color -> transition: border-color 0.2s, background-color 0.2s
（该文件在 C-3 批次后被外部提交新增/改动，复审补漏）

cfc-frontend/pages/profile/service-role-apply.vue

@@ -557,7 +557,7 @@ export default {
   align-items: center;
   position: relative;
   border: 3rpx solid transparent;
-  transition: all 0.2s;
+  transition: border-color 0.2s, background-color 0.2s;
 }
 .role-card.selected {
   background: #FFF7ED;