Remove 'static requirement on run

There's no need to force the static on the users, given that internally
some backends were not using static in the first place.

Co-authored-by: daxpedda <daxpedda@gmail.com>

src/event_loop.rs

@@ -310,11 +310,14 @@ impl<T> EventLoop<T> {
     ///   asynchronously (via the browser's own, internal, event loop) and doesn't block the
     ///   current thread of execution like it does on other platforms.
     ///
+    ///   This function won't be available with `target_feature = "exception-handling"`.
+    ///
     /// [`ControlFlow`]: crate::event_loop::ControlFlow
     #[inline]
+    #[cfg(not(all(wasm_platform, target_feature = "exception-handling")))]
     pub fn run<F>(self, event_handler: F) -> Result<(), RunLoopError>
     where
-        F: 'static + FnMut(Event<T>, &EventLoopWindowTarget<T>, &mut ControlFlow),
+        F: FnMut(Event<T>, &EventLoopWindowTarget<T>, &mut ControlFlow),
     {
         self.event_loop.run(event_handler)
     }