fix(admin): stabilize tenant import report UI and satisfy E2E tests

- Added missing i18n keys for import results in both root and common locales.
- Fixed TypeScript type errors and implicit 'any' types in TenantListPage.
- Added 'destructive' variant to common Badge component.
- Updated Playwright tests with refined locators and enhanced API mocks to match the new reporting structure.
- Restored quick summary message in Tenant Registry for backward compatibility.

locales/template.toml

@@ -233,6 +233,12 @@ view_org_chart = ""
 description = ""
 title = ""
 
+[ui.admin.tenants.import_result]
+message = ""
+modified = ""
+status = ""
+title = ""
+
 [ui.admin.tenants.import_preview]
 candidates = ""
 confirm = ""
@@ -1747,6 +1753,12 @@ search_placeholder = ""
 title = ""
 tree_search_placeholder = ""
 
+[ui.admin.tenants.import_result]
+message = ""
+modified = ""
+status = ""
+title = ""
+
 [ui.admin.tenants.import_preview]
 candidates = ""
 confirm = ""