### 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.
DisplayServer::get_singleton()->clipboard_set_primary(text);
						}
					} else if (b->is_double_click()) {
						
						last_dblclk = OS::get_singleton()->get_ticks_msec();
						last_dblclk_pos = b->get_position();
						PackedInt32Array words = TS->shaped_text_get_word_breaks(text_rid);
						for (int i = 0; i < words.size(); i = i + 2) {
							if ((words[i] < caret_column && words[i + 1] > caret_column) || (i == words.size() - 2 && caret_column == words[i + 1])) {
								selection.enabled = true;
								selection.begin = words[i];
								selection.end = words[i + 1];
								selection.double_click = true;
								set_caret_column(selection.end);
								break;
							}
						}
						if (!pass && DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_CLIPBOARD_PRIMARY)) {
							DisplayServer::get_singleton()->clipboard_set_primary(get_selected_text());
						}
					}
				}
				selection.drag_attempt = false;
				if ((caret_column < selection.begin) || (caret_column > selection.end) || !selection.enabled) {
					deselect();
					selection.start_column = caret_column;
					selection.creating = true;
				} else if (selection.enabled && !selection.double_click) {
					selection.drag_attempt = true;
				}