### Godot version

4.0 beta 10

### System information

Windows 11 Vulkan

### Issue description

Looked through the issues list, but couldn't find something like this, sorry in advance if this has already been reported.

There is a few cases (in the pictures below) where list of Actions in Input Map may not always show a scrollbar even if the actions list overflows (I imagine this could also happen for the widget that Input Map uses).

![image](https://user-images.githubusercontent.com/39958198/210003566-cf60dbaf-921f-485b-b0a9-51ffc28d0244.png)

![New Bitmap image](https://user-images.githubusercontent.com/39958198/210004079-8eb2e6a1-0cf5-4a7c-8905-a4e3cfd0ec5d.png)

![image](https://user-images.githubusercontent.com/39958198/210004165-a6b6790b-248a-4f68-b4d0-b44b25afdf4f.png)

![image](https://user-images.githubusercontent.com/39958198/210004537-aca52194-a464-48b9-b818-24782706de45.png)


### Steps to reproduce

The pictures are clearer than anything I could write here: "a picture is worth 1000 words"

### Minimal reproduction project

N/A
if (p_emit_signal) {
		current->tree->emit_signal(SNAME("check_propagated_to_item"), current, p_column);
	}
	current->_propagate_check_through_parents(p_column, p_emit_signal);
}
void TreeItem::set_text(int p_column, String p_text) {
	ERR_FAIL_INDEX(p_column, cells.size());
	if (cells[p_column].text == p_text) {
		return;
	}
	cells.write[p_column].text = p_text;
	cells.write[p_column].dirty = true;
	if (cells[p_column].mode == TreeItem::CELL_MODE_RANGE) {
		Vector<String> strings = p_text.split(",");
		cells.write[p_column].min = INT_MAX;
		cells.write[p_column].max = INT_MIN;
		for (int i = 0; i < strings.size(); i++) {
			int value = i;
			if (!strings[i].get_slicec(':', 1).is_empty()) {
				value = strings[i].get_slicec(':', 1).to_int();
			}
			cells.write[p_column].min = MIN(cells[p_column].min, value);
			cells.write[p_column].max = MAX(cells[p_column].max, value);
		}
		cells.write[p_column].step = 0;
	}
	cells.write[p_column].cached_minimum_size_dirty = true;
	_changed_notify(p_column);
}
String TreeItem::get_text(int p_column) const {