### Godot version

v4.2.dev.custom_build [0ca854232]

### System information

Pop Os 22.04 lts 12th Gen Intel® Core™ i7-12700H × 20 NVIDIA RTX A2000 8GB 32.0GB  ram

### Issue description

A node that has a script attached to it and it has a couple of child nodes (type of a child node doesn't matter). In the script you have an export variable of type Node. You save the scene into a file and you add it in level scene. When you start to duplicate that scene in the level and you'll hover over exported variable to show a node path, it will show an incorrect path. 


https://github.com/godotengine/godot/assets/33091666/75088d1b-c014-41e0-bae3-46610eccbad1



### Steps to reproduce

1. create a scene with a node and a child node.
2. attach a script to the parent node and create an export variable of type Node
3. assign child node to that exported variable through the editor
4. save the scene and create a level scene where you are going to add just saved scene.
5. _Possibly requires a reboot of the engine before seeing the bug_
6. start duplicating nodes in the level scene

### Minimal reproduction project

[NodeTest.zip](https://github.com/godotengine/godot/files/12781547/NodeTest.zip)

}
		if (!unique) {
			ERR_FAIL_COND(!node_hrcr_count.ref());
			
			
			uint32_t c = node_hrcr_count.get();
			String cn = p_child->get_class_name().operator String();
			const char32_t *cn_ptr = cn.ptr();
			uint32_t cn_length = cn.length();
			uint32_t c_chars = String::num_characters(c);
			uint32_t len = 2 + cn_length + c_chars;
			char32_t *str = (char32_t *)alloca(sizeof(char32_t) * (len + 1));
			uint32_t idx = 0;
			str[idx++] = '@';
			for (uint32_t i = 0; i < cn_length; i++) {
				str[idx++] = cn_ptr[i];
			}
			str[idx++] = '@';
			idx += c_chars;
			ERR_FAIL_COND(idx != len);
			str[idx] = 0;
			while (c) {
				str[--idx] = '0' + (c % 10);
				c /= 10;
			}
			p_child->data.name = String(str);
		}
	}
}
String increase_numeric_string(const String &s) {