feat(web): 差旅申请详情进度 viewer 与审批/加载态组件增强

- 新增 requestProgressViewer，申请单在直属领导审批视角下将当前步骤展示为'等待批复'，travel-request-detail/app-shell/useRequests 接入
- TravelRequestApprovalDialog 增强审批交互，TableLoadingState 补充表格加载占位，ConfirmDialog 扩展确认对话框能力
- useAppShell/useRequests/AppShellRouteView 配套适配申请详情跳转与会话状态
- 同步更新 requestProgressSteps、travel-request-detail-leader-approval、assistant-session-draft-delete、documents-center-status-filter、app-shell-financial-assistant-entry、request-progress-viewer 等测试

web/tests/app-shell-financial-assistant-entry.test.mjs

@@ -97,7 +97,7 @@ test('workbench summary merges approval inbox requests without polluting documen
   assert.match(appShellComposable, /const workbenchRequests = computed\(\(\) =>[\s\S]*mergeWorkbenchRequests\(requests\.value, workbenchApprovalRequests\.value\)/)
   assert.match(appShellComposable, /buildWorkbenchSummary\(workbenchRequests\.value, currentUser\.value\)/)
   assert.match(appShellRouteView, /<DocumentsCenterView[\s\S]*:filtered-requests="requests"/)
-  assert.doesNotMatch(appShellRouteView, /<DocumentsCenterView[\s\S]*workbenchRequests/)
+  assert.doesNotMatch(appShellRouteView, /<DocumentsCenterView(?:(?!\/>)[\s\S])*workbenchRequests/)
 })
 
 test('workbench progress refreshes after homepage create or detail updates', () => {