Request a redraw when the url change through the `popstate` event listener (#7403)

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Hey, I added an event listener on the [`popstate`
event](https://developer.mozilla.org/en-US/docs/Web/API/Window/popstate_event).
That fixed my issue


https://github.com/user-attachments/assets/a621dac9-b7c3-426a-968b-dc73c5702eea

* Closes https://github.com/emilk/egui/issues/7402
* [x] I have followed the instructions in the PR template

crates/eframe/src/web/events.rs

@@ -405,7 +405,7 @@ fn install_window_events(runner_ref: &WebRunner, window: &EventTarget) -> Result
 
     // No need to subscribe to "resize": we already subscribe to the canvas
     // size using a ResizeObserver, and we also subscribe to DPR changes of the monitor.
-    for event_name in &["load", "pagehide", "pageshow"] {
+    for event_name in &["load", "pagehide", "pageshow", "popstate"] {
         runner_ref.add_event_listener(window, event_name, move |_: web_sys::Event, runner| {
             if DEBUG_RESIZE {
                 log::debug!("{event_name:?}");