refactor(ui): 重构装备和英雄的词条展示逻辑

1. 替换单个Label词条为RichText多行展示
2. 统一使用buildEquipRich和buildSkillDescRich生成带高亮的词条文本
3. 调整prefab的UI元素尺寸适配新的富文本展示
4. 新增showName参数适配不同场景的技能名显示需求

assets/resources/gui/element/cItem.prefab

@@ -2374,7 +2374,7 @@
     "_contentSize": {
       "__type__": "cc.Size",
       "width": 189.9,
-      "height": 26.46
+      "height": 90
     },
     "_anchorPoint": {
       "__type__": "cc.Vec2",

assets/resources/gui/element/cSkill.prefab

@@ -2194,7 +2194,7 @@
     "_contentSize": {
       "__type__": "cc.Size",
       "width": 190,
-      "height": 26.46
+      "height": 90
     },
     "_anchorPoint": {
       "__type__": "cc.Vec2",