[BUG] Select Linked Faces by Angle crash when you put a node after

Hello,

**Describe the bug**
Message error when I use the node 'Select Linked Faces by Angle'

**To Reproduce**
Steps to reproduce the behavior:
1. Add : Create Ico Sphere [Value : 2 ; 1.00]
2. Add : Inset [Value : 0.10 ; 0.03 ; Individual ON]
3. Add : Subdivision Surface Modifier [Value : Type Catmull-Clark ; 2]
4. Add : Select Linked Faces by Angle [Value : 1.00]
5. Add : Inset
6. Click on Set preview of the Inset node

**Expected behavior**
A working connection between ' Select Linked Faces by Angle ' and other node ( the output of ' Select Linked Faces by Angle ' was good ).

**Screenshots**

**Desktop (please complete the following information):**
- OS: [e.g. Windows]
- Blender Version [e.g. 2.83.5]
- Sorcar Version [e.g. 3.2.0]

**Additional context**
`
Traceback (most recent call last):
File "C:\Users\sbaykal\AppData\Roaming\Blender Foundation\Blender\2.83\scripts\addons\Sorcar-master\operators\ScExecuteNode.py", line 19, in execute
curr_tree.execute_node()
File "C:\Users\sbaykal\AppData\Roaming\Blender Foundation\Blender\2.83\scripts\addons\Sorcar-master\tree\ScNodeTree.py", line 74, in execute_node
self.unregister_all_objects()
File "C:\Users\sbaykal\AppData\Roaming\Blender Foundation\Blender\2.83\scripts\addons\Sorcar-master\tree\ScNodeTree.py", line 35, in unregister_all_objects
remove_object(object)
File "C:\Users\sbaykal\AppData\Roaming\Blender Foundation\Blender\2.83\scripts\addons\Sorcar-master\helper.py", line 42, in remove_object
if hasattr(data, "users"):
ReferenceError: StructRNA of type Mesh has been removed

location: :-1
`

崩溃发生在 ScNodeTree.py 第 74 行和 helper.py 第 42 行，即在执行 'Select Linked Faces by Angle' node 后 unregister 对象时。先检查 Sorcar addon 中该 node 的实现，可能在 nodes 或 operators 下。按照给定步骤在 Blender 中复现错误，然后追踪为什么 Mesh struct 被过早移除。检查 node 之间的对象生命周期和数据处理。

由索引模型根据 Issue 内容生成。