fix: 调整H节点预制体布局与尺寸

调整节点位置Y坐标、容器高度及顶部边距，解决布局错位问题，确保视觉元素正确对齐。

assets/resources/gui/element/hnode.prefab

@@ -579,7 +579,7 @@
     "_lpos": {
       "__type__": "cc.Vec3",
       "x": 67.5,
-      "y": 4.769999999999996,
+      "y": 2.385000000000005,
       "z": 0
     },
     "_lrot": {
@@ -673,7 +673,7 @@
     "_contentSize": {
       "__type__": "cc.Size",
       "width": 135,
-      "height": 165
+      "height": 160.23000000000002
     },
     "_anchorPoint": {
       "__type__": "cc.Vec2",
@@ -1510,7 +1510,7 @@
     "_contentSize": {
       "__type__": "cc.Size",
       "width": 135,
-      "height": 165
+      "height": 160.23000000000002
     },
     "_anchorPoint": {
       "__type__": "cc.Vec2",
@@ -1539,7 +1539,7 @@
     "_target": null,
     "_left": 0,
     "_right": 0,
-    "_top": -12.269999999999989,
+    "_top": -7.5,
     "_bottom": -2.7300000000000058,
     "_horizontalCenter": 0,
     "_verticalCenter": 0,