### 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
zoom_minus->set_focus_mode(FOCUS_NONE);
	zoom_reset = memnew(Button);
	zoom_reset->set_flat(true);
	zoom_hb->add_child(zoom_reset);
	zoom_reset->set_tooltip_text(RTR("Zoom Reset"));
	zoom_reset->connect("pressed", callable_mp(this, &GraphEdit::_zoom_reset));
	zoom_reset->set_focus_mode(FOCUS_NONE);
	zoom_plus = memnew(Button);
	zoom_plus->set_flat(true);
	zoom_hb->add_child(zoom_plus);
	zoom_plus->set_tooltip_text(RTR("Zoom In"));
	zoom_plus->connect("pressed", callable_mp(this, &GraphEdit::_zoom_plus));
	zoom_plus->set_focus_mode(FOCUS_NONE);
	snap_button = memnew(Button);
	snap_button->set_flat(true);
	snap_button->set_toggle_mode(true);
	snap_button->set_tooltip_text(RTR("Enable snap and show grid."));
	snap_button->connect("pressed", callable_mp(this, &GraphEdit::_snap_toggled));
	snap_button->set_pressed(true);
	snap_button->set_focus_mode(FOCUS_NONE);
	zoom_hb->add_child(snap_button);
	snap_amount = memnew(SpinBox);
	snap_amount->set_min(5);
	snap_amount->set_max(100);
	snap_amount->set_step(1);
	snap_amount->set_value(20);
	snap_amount->connect("value_changed", callable_mp(this, &GraphEdit::_snap_value_changed));
	zoom_hb->add_child(snap_amount);
	minimap_button = memnew(Button);
	minimap_button->set_flat(true);