feat(component-test): 优化测试实例组件布局与样式

- 调整测试实例组件中折叠面板标题的宽度为100%
- 修改操作标识符容器的样式以增强布局灵活性
- 在折叠面板标题上增加全局CSS类名支持
- 更新相关样式文件以适配新的布局需求

src/pages/componentDevelopment/componentTest/style/testInstance.module.less

@@ -71,6 +71,11 @@
         flex: 1;
         overflow-y: auto;
 
+
+        :global(.arco-collapse-item-header-title) {
+          width: 100%;
+        }
+
         .tree-list {
           .tree-item {
             display: flex;

src/pages/componentDevelopment/componentTest/testInstance.tsx

@@ -115,7 +115,15 @@ const TestInstance = ({ instance, parentId, onBack }: { instance: any; parentId:
               {testCaseList.map((item: any, index: number) => (
                 <CollapseItem
                   header={
-                    <div onClick={() => setActiveOperationIdent(item.operationIdent)}>
+                    <div
+                      style={{
+                        width: '100%',
+                        height: '100%',
+                        display: 'flex',
+                        alignItems: 'center'
+                      }}
+                      onClick={() => setActiveOperationIdent(item.operationIdent)}
+                    >
                       {item.operationIdent}
                     </div>
                   }