fix(tournaments): 修复比赛项目列显示问题

- 将比赛项目列的prop从gameVariant改为projectName
- 为比赛项目列添加固定宽度150px
- 注释掉原有的游戏变体格式化模板代码
- 保留el-image组件用于显示比赛Logo功能

src/views/system/business/tournaments/index.vue

@@ -88,11 +88,12 @@
         <!--        <el-table-column type="selection" width="55" align="center" />-->
         <el-table-column label="比赛ID" align="center" prop="id" width="70" />
         <el-table-column label="比赛名" align="center" prop="name" />
-        <el-table-column label="比赛项目" align="center" prop="gameVariant">
+        <el-table-column label="比赛项目" align="center" prop="projectName" width="150" />
+<!--        <el-table-column label="比赛项目" align="center" prop="gameVariant">
           <template #default="scope">
             {{ getGameVariantText(scope.row.gameVariant) }}
           </template>
-        </el-table-column>
+        </el-table-column>-->
         <el-table-column label="比赛Logo" align="center" width="90">
           <template #default="scope">
             <el-image