### Godot version

4.0.dev (d0398f62f0)

### System information

Windows 10

### Issue description

`GraphNode` class declares members with conflicting names.  
- `selected` property: https://github.com/godotengine/godot/blob/0daa86d70e7338506c37bee6b6e0c4aba7255d68/scene/gui/graph_node.cpp#L1154
- `selected` signal: https://github.com/godotengine/godot/blob/0daa86d70e7338506c37bee6b6e0c4aba7255d68/scene/gui/graph_node.cpp#L1164

As now signals are truely members of the class, this leads to name colliding in several languages.  
- In GDScript, the signal can't be used as it is treated as a property:
![image](https://user-images.githubusercontent.com/48322356/210059248-edbbd142-5d34-41f0-a3f5-08d4f2e02fc3.png)
- In Kotlin, the generated API code cannot compile as signal and property declarations are conflicting:
```
e: ~\git\godot\modules\kotlin_jvm\kt\godot-library\src\main\kotlin\godot\gen\godot\GraphNode.kt: (53, 14): Conflicting declarations: public final val selected: Signal0, public final var selected: Boolean
e: ~\git\godot\modules\kotlin_jvm\kt\godot-library\src\main\kotlin\godot\gen\godot\GraphNode.kt: (182, 14): Conflicting declarations: public final val selected: Signal0, public final var selected: Boolean
```

### Steps to reproduce

Try to use `selected` signal from GDScript.

### Minimal reproduction project

N/A
if (connecting) {
			force_connection_drag_end();
		}
	}
}
bool GraphEdit::_check_clickable_control(Control *p_control, const Vector2 &mpos, const Vector2 &p_offset) {
	if (p_control->is_set_as_top_level() || !p_control->is_visible() || !p_control->is_inside_tree()) {
		return false;
	}
	Rect2 control_rect = p_control->get_rect();
	control_rect.size *= zoom;
	control_rect.position *= zoom;
	control_rect.position += p_offset;
	if (!control_rect.has_point(mpos) || p_control->get_mouse_filter() == MOUSE_FILTER_IGNORE) {
		
		for (int i = 0; i < p_control->get_child_count(); i++) {
			Control *child_rect = Object::cast_to<Control>(p_control->get_child(i));
			if (!child_rect) {
				continue;
			}
			if (_check_clickable_control(child_rect, mpos, control_rect.position)) {
				return true;
			}
		}
		return false;
	} else {
		return true;
	}
}
bool GraphEdit::is_in_input_hotzone(GraphNode *p_node, int p_port, const Vector2 &p_mouse_pos, const Vector2i &p_port_size) {