Add the onvisible event handler to Element (#2911)

* Add the `onvisible` event using the IntersectionObserver

* Add a visible example

This example is based on https://codepen.io/ryanfinni/pen/VwZeGxN

* Remove web-sys CustomEvent feature for html package

* update js bindings and hash

* Use dioxus doc instead of lorem ipsum

* Fix clippy warning

* Add get_target method to the event data

* Make `get_time` return an Instant instead of a f64

* fix merge conflicts, compilinga

* remove target

* small nits

* serialzie as time_ms

* fix timing, works on desktop

* remove latent nits, fix hash

* box size clippy

* fix browserlist cargo.lock

---------

Co-authored-by: Evan Almloff <evanalmloff@gmail.com>
Co-authored-by: Jonathan Kelley <jkelleyrtp@gmail.com>

packages/liveview/src/events.rs

@@ -147,6 +147,14 @@ impl HtmlEventConverter for SerializedHtmlEventConverter {
             .into()
     }
 
+    fn convert_visible_data(&self, event: &PlatformEventData) -> VisibleData {
+        event
+            .downcast::<SerializedVisibleData>()
+            .cloned()
+            .unwrap()
+            .into()
+    }
+
     fn convert_wheel_data(&self, event: &PlatformEventData) -> WheelData {
         event
             .downcast::<SerializedWheelData>()

packages/liveview/src/pool.rs

@@ -152,7 +152,7 @@ pub async fn run(mut vdom: VirtualDom, ws: impl LiveViewSocket) -> Result<(), Li
     #[serde(tag = "method", content = "params")]
     enum IpcMessage {
         #[serde(rename = "user_event")]
-        Event(HtmlEvent),
+        Event(Box<HtmlEvent>),
         #[serde(rename = "query")]
         Query(QueryResult),
     }