### 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.
caret = TS->shaped_text_get_carets(text_rid, caret_column + ime_selection.x);
	} else {
		caret = TS->shaped_text_get_carets(text_rid, caret_column);
	}
	if ((caret.l_caret != Rect2() && (caret.l_dir == TextServer::DIRECTION_AUTO || caret.l_dir == (TextServer::Direction)input_direction)) || (caret.t_caret == Rect2())) {
		ret.x = x_ofs + caret.l_caret.position.x + scroll_offset;
	} else {
		ret.x = x_ofs + caret.t_caret.position.x + scroll_offset;
	}
	
	if (ime_text.length() != 0) {
		if (ime_selection.y != 0) {
			caret = TS->shaped_text_get_carets(text_rid, caret_column + ime_selection.x + ime_selection.y);
		} else {
			caret = TS->shaped_text_get_carets(text_rid, caret_column + ime_text.size());
		}
		if ((caret.l_caret != Rect2() && (caret.l_dir == TextServer::DIRECTION_AUTO || caret.l_dir == (TextServer::Direction)input_direction)) || (caret.t_caret == Rect2())) {
			ret.y = x_ofs + caret.l_caret.position.x + scroll_offset;
		} else {
			ret.y = x_ofs + caret.t_caret.position.x + scroll_offset;
		}
	} else {
		ret.y = ret.x;
	}
	return ret;
}
void LineEdit::set_caret_mid_grapheme_enabled(const bool p_enabled) {
	caret_mid_grapheme_enabled = p_enabled;
}
bool LineEdit::is_caret_mid_grapheme_enabled() const {