Can't add other modifiers to Tab or Escape for shortcuts

[barries]

Describe the bug

This code in memory/mod.rs makes it seem like we can't implement Ctrl+Tab (for example) or Ctrl+Escape hotkeys in the normal way in widgets--i.e. during update(). Or is there some graceful way to handle this in egui that I'm missing?

If not, would a PR limiting this to not having Ctrl, Alt, or Cmd pressed be accepted?

for event in &new_input.events {
    if !event_filter.matches(event) {
        if let crate::Event::Key {
            key,
            pressed: true,
            modifiers,
            ..
        } = event
        {
            if let Some(cardinality) = match key {
                ...
                crate::Key::Tab => {
                    if modifiers.shift {
                        Some(FocusDirection::Previous)
                    } else {
                        Some(FocusDirection::Next)
                    }
                }
                crate::Key::Escape => {
                    self.focused_widget = None;
                    Some(FocusDirection::None)
                }
                _ => None,
            } {