### 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
Ref<Font> font = get_theme_font(SNAME("title_font"));
	int font_size = get_theme_font_size(SNAME("title_font_size"));
	title_buf->clear();
	if (text_direction == Control::TEXT_DIRECTION_INHERITED) {
		title_buf->set_direction(is_layout_rtl() ? TextServer::DIRECTION_RTL : TextServer::DIRECTION_LTR);
	} else {
		title_buf->set_direction((TextServer::Direction)text_direction);
	}
	title_buf->add_string(title, font, font_size, language);
}
#ifdef TOOLS_ENABLED
void GraphNode::_edit_set_position(const Point2 &p_position) {
	GraphEdit *graph = Object::cast_to<GraphEdit>(get_parent());
	if (graph) {
		Point2 offset = (p_position + graph->get_scroll_ofs()) * graph->get_zoom();
		set_position_offset(offset);
	}
	set_position(p_position);
}
#endif
void GraphNode::_validate_property(PropertyInfo &p_property) const {
	GraphEdit *graph = Object::cast_to<GraphEdit>(get_parent());
	if (graph) {
		if (p_property.name == "position") {
			p_property.usage |= PROPERTY_USAGE_READ_ONLY;
		}
	}
}
void GraphNode::set_slot(int p_idx, bool p_enable_left, int p_type_left, const Color &p_color_left, bool p_enable_right, int p_type_right, const Color &p_color_right, const Ref<Texture2D> &p_custom_left, const Ref<Texture2D> &p_custom_right, bool p_draw_stylebox) {