### Tested versions

v4.2.stable.official [46dc27791]

### System information

Windows 11- Godot v4.2.stable.official [46dc27791] - Vulkan (Forward+)

### Issue description

When I switch picker mode the next time I open it should be the pick mode I selected last time but it's not

https://github.com/godotengine/godot/assets/46812028/522c8b55-14cf-4781-963f-a465a03c9432



### Steps to reproduce

Toggle a picker mode off and on again

### Minimal reproduction project (MRP)

N/A
for (int i = 0; i < modes.size(); i++) {
		delete modes[i];
	}
}
void ColorPickerButton::_about_to_popup() {
	set_pressed(true);
	if (picker) {
		picker->set_old_color(color);
	}
}
void ColorPickerButton::_color_changed(const Color &p_color) {