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.

common/locales/en.toml

@@ -26,6 +26,7 @@ subtitle = "View administrator activity history."
 subtitle = "View developer activity history within the current app scope."
 
 [ui.common]
+no_results = "No results to display."
 apply = "Apply"
 actions = "Actions"
 add = "Add"

common/locales/ko.toml

@@ -26,6 +26,7 @@ subtitle = "관리자 작업 이력을 조회합니다."
 subtitle = "현재 앱 범위의 개발자 작업 이력을 조회합니다."
 
 [ui.common]
+no_results = "표시할 결과가 없습니다."
 apply = "적용"
 actions = "액션"
 add = "추가"

common/locales/template.toml

@@ -26,6 +26,7 @@ subtitle = ""
 subtitle = ""
 
 [ui.common]
+no_results = ""
 apply = "Apply"
 actions = ""
 add = ""