Fix multi-key shortcuts (zed-industries#13606)

Broken by the shift shift support PR

Release Notes:

- Fix multi-key shortcuts (preview only)

crates/gpui/src/window.rs

@@ -3201,13 +3201,7 @@ impl<'a> WindowContext<'a> {
             } else if event.modifiers.number_of_modifiers() == 1 {
                 self.window.pending_modifiers = Some(event.modifiers);
             }
-            if keystroke.is_none() {
-                self.finish_dispatch_key_event(event, dispatch_path);
-                return;
-            }
-        }
-
-        if let Some(key_down_event) = event.downcast_ref::<KeyDownEvent>() {
+        } else if let Some(key_down_event) = event.downcast_ref::<KeyDownEvent>() {
             self.window.pending_modifiers.take();
             let KeymatchResult {
                 bindings: key_down_bindings,
@@ -3224,6 +3218,11 @@ impl<'a> WindowContext<'a> {
             pending = key_down_pending;
         }
 
+        if keystroke.is_none() {
+            self.finish_dispatch_key_event(event, dispatch_path);
+            return;
+        }
+
         if pending {
             let mut currently_pending = self.window.pending_input.take().unwrap_or_default();
             if currently_pending.focus.is_some() && currently_pending.focus != self.window.focus {