Use ESC to cancel dragging in Zed (#30318)

Closes https://github.com/zed-industries/zed/issues/11887

ESC is always captured in terminal due to 


980bfae331/crates/terminal/src/terminal.rs (L1339-L1353)

so this part is not fixed.

Otherwise, all other drags are cancelled when ESC is pressed:


https://github.com/user-attachments/assets/6e70a1e5-c244-420b-9dec-ae2ac2997a59


Release Notes:

- Allowed to use ESC to cancel dragging in Zed

crates/debugger_ui/src/session/running.rs

@@ -352,6 +352,13 @@ pub(crate) fn new_debugger_pane(
                     .px_2()
                     .border_color(cx.theme().colors().border)
                     .track_focus(&focus_handle)
+                    .on_action(|_: &menu::Cancel, window, cx| {
+                        if cx.stop_active_drag(window) {
+                            return;
+                        } else {
+                            cx.propagate();
+                        }
+                    })
                     .child(
                         h_flex()
                             .w_full()