### Godot version

v4.1.beta.custom_build [d3651ea45]

### System information

Windows 11

### Issue description

![1](https://github.com/godotengine/godot/assets/28705694/15c14c93-7ad7-425a-8fb0-bef841b75527)

It's not possible to start text selection on a SpinBox when it's unfocused.

Note: After a bit of digging in the code, I found that clicking on a SpintBox doesn't trigger `SpinBox::gui_input` no matter if it's focused or not. However, releasing mouse left button does trigger the function.

### Steps to reproduce

See the gif.

### Minimal reproduction project

It's simple to reproduce.
if (!selecting_enabled) {
		return;
	}
	if (!text.length()) {
		return;
	}
	selection.begin = 0;
	selection.end = text.length();
	selection.enabled = true;
	queue_redraw();
}
void LineEdit::set_editable(bool p_editable) {
	if (editable == p_editable) {
		return;
	}
	editable = p_editable;
	_validate_caret_can_draw();
	update_minimum_size();
	queue_redraw();
}
bool LineEdit::is_editable() const {