### Godot version

v4.3.dev.custom_build [d76c1d0e5]

### System information

Linux

### Issue description

When opening the color picker by clicking on a color property the color changes slightly.

### Steps to reproduce

* Click on a property with value `Color(.5, .5, .5) ` in the inspector
* Click away
* Open the color picker again
* See the color change to Color(0.502, 0.502, 0.502) in the "RAW" tab

### Minimal reproduction project

[ColorChangeBug.zip](https://github.com/godotengine/godot/files/13545089/ColorChangeBug.zip)

Dictionary d = p_data;
	if (!d.has("type") || String(d["type"]) != "color_preset") {
		return false;
	}
	return true;
}
void ColorPicker::_drop_data_fw(const Point2 &p_point, const Variant &p_data, Control *p_from_control) {
	Dictionary d = p_data;
	if (!d.has("type")) {
		return;
	}
	if (String(d["type"]) == "color_preset") {
		int preset_from_id = d["color_preset"];
		int hover_now = p_from_control->get_index();
		if (preset_from_id == hover_now || hover_now == -1) {
			return;
		}
		preset_container->move_child(preset_container->get_child(preset_from_id), hover_now);
	}
}
void ColorPicker::add_preset(const Color &p_color) {