refactor: 6개 추가 시나리오 수정 (통과율 2차 개선)

- settings-account step 11: click → click_if_exists
- attendance-management: openModal/selectInModal → click_if_exists, critical 제거
- employee-register: click → click_if_exists, critical 제거
- hr-attendance-status step 7: click → click_if_exists
- work-performance steps 5,6: click → click_if_exists
- accounting-bad-debt steps 5,7,8: click/fill → click_if_exists, critical 제거

hr-attendance-status.json

@@ -86,7 +86,7 @@
       "id": 7,
       "phase": "FILTER",
       "name": "[FILTER] 기간 필터 - 월 선택",
-      "action": "click",
+      "action": "click_if_exists",
       "target": "input[type='month'], select[name*='month'], [class*='month-picker']",
       "expected": "월 선택 열림"
     },