### 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
String str = p_name;
	if (!str.begins_with("slot/")) {
		return false;
	}
	int idx = str.get_slice("/", 1).to_int();
	String what = str.get_slice("/", 2);
	Slot si;
	if (slot_info.has(idx)) {
		si = slot_info[idx];
	}
	if (what == "left_enabled") {
		si.enable_left = p_value;
	} else if (what == "left_type") {
		si.type_left = p_value;
	} else if (what == "left_icon") {
		si.custom_slot_left = p_value;
	} else if (what == "left_color") {
		si.color_left = p_value;
	} else if (what == "right_enabled") {
		si.enable_right = p_value;
	} else if (what == "right_type") {
		si.type_right = p_value;
	} else if (what == "right_color") {
		si.color_right = p_value;
	} else if (what == "right_icon") {
		si.custom_slot_right = p_value;
	} else if (what == "draw_stylebox") {
		si.draw_stylebox = p_value;
	} else {
		return false;