feat: add CronDeleteDialog component and integrate it into CronPage for job deletion

- Implemented a new CronDeleteDialog component for confirming job deletions.
- Integrated the CronDeleteDialog into the CronPage, allowing users to delete cron jobs with confirmation.
- Refactored job deletion logic to handle state updates and loading indicators during deletion.
- Removed unused delivery channel related code from CronPage and CronTaskDialog.
- Cleaned up chat store session deletion logic to improve state management and ensure proper session handling.

src/i18n/locales/en/cron.json

@@ -35,6 +35,12 @@
     "deleted": "Task deleted."
   },
   "confirmDelete": "Delete “{name}”? This cannot be undone.",
+  "deleteDialog": {
+    "title": "Delete task",
+    "label": "Task name",
+    "confirm": "Confirm delete",
+    "deleting": "Deleting..."
+  },
   "common": {
     "unnamedJob": "Untitled task"
   },

src/i18n/locales/th/cron.json

@@ -35,6 +35,12 @@
     "deleted": "ลบงานแล้ว"
   },
   "confirmDelete": "ต้องการลบ \"{name}\" หรือไม่? การดำเนินการนี้ไม่สามารถย้อนกลับได้",
+  "deleteDialog": {
+    "title": "ลบงาน",
+    "label": "ชื่องาน",
+    "confirm": "ยืนยันการลบ",
+    "deleting": "กำลังลบ..."
+  },
   "common": {
     "unnamedJob": "งานไม่มีชื่อ"
   },

src/i18n/locales/zh/cron.json

@@ -35,6 +35,12 @@
     "deleted": "任务已删除。"
   },
   "confirmDelete": "确认删除“{name}”吗？删除后将无法恢复。",
+  "deleteDialog": {
+    "title": "删除任务",
+    "label": "任务名称",
+    "confirm": "确认删除",
+    "deleting": "删除中..."
+  },
   "common": {
     "unnamedJob": "未命名任务"
   },