refactor(mission): 优化节间过场表现与关卡流程

1. 新增地图滚动速度重置与背景动画加速逻辑，强化过场推进感
2. 重构节间过场流程，同步启动英雄归位与地图滚动
3. 调整关卡文本显示格式与字体大小，优化视觉体验
4. 新增全局移动锁控制英雄过场动画状态，修复动画残留问题

assets/resources/gui/element/mission.prefab

@@ -5746,10 +5746,10 @@
       "b": 255,
       "a": 255
     },
-    "_string": "第 {{0}}章{{0}}{{2}}关",
+    "_string": "第 {{0}}-{{1}}关",
     "_horizontalAlign": 1,
     "_verticalAlign": 1,
-    "_actualFontSize": 20,
+    "_actualFontSize": 26,
     "_fontSize": 25,
     "_fontFamily": "Arial",
     "_lineHeight": 40,
@@ -5809,8 +5809,7 @@
     "labelType": "cc.Label",
     "watchPathArr": [
       "data.stage_progress.chapter ",
-      "data.stage_progress.stage",
-      "data.stage_progress.section"
+      "data.stage_progress.stage"
     ],
     "_id": ""
   },
@@ -5827,8 +5826,6 @@
       "__id__": 0
     },
     "fileId": "4685Eq90tNG7LQanmN1qTk",
-    "instance": null,
-    "targetOverrides": null,
     "nestedPrefabInstanceRoots": null
   },
   {