### 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
#include "graph_edit.h"
#include "core/input/input.h"
#include "core/math/math_funcs.h"
#include "core/os/keyboard.h"
#include "scene/gui/box_container.h"
#include "scene/gui/button.h"
#include "scene/gui/view_panner.h"
constexpr int MINIMAP_OFFSET = 12;
constexpr int MINIMAP_PADDING = 5;
bool GraphEditFilter::has_point(const Point2 &p_point) const {
	return ge->_filter_input(p_point);
}
GraphEditFilter::GraphEditFilter(GraphEdit *p_edit) {
	ge = p_edit;
}
GraphEditMinimap::GraphEditMinimap(GraphEdit *p_edit) {
	ge = p_edit;
	graph_proportions = Vector2(1, 1);
	graph_padding = Vector2(0, 0);
	camera_position = Vector2(100, 50);
	camera_size = Vector2(200, 200);
	minimap_padding = Vector2(MINIMAP_PADDING, MINIMAP_PADDING);
	minimap_offset = minimap_padding + _convert_from_graph_position(graph_padding);
	is_pressing = false;
	is_resizing = false;
}
void GraphEditMinimap::update_minimap() {