fix(pages): 移除裸 except Exception 改用精确异常类型并加固元素操作防护

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/pages/components/ReserveResultDialog.py

@@ -45,8 +45,6 @@ class ReserveResultDialog(Dialog):
             return self._find(*self._titleLocator()).text
         except (NoSuchElementException, StaleElementReferenceException):
             return ""
-        except Exception:
-            return ""
 
     def isSuccess(
         self,
@@ -77,5 +75,3 @@ class ReserveResultDialog(Dialog):
             return [el.text for el in elements if el.text.strip()]
         except (NoSuchElementException, StaleElementReferenceException):
             return []
-        except Exception:
-            return []