fix: Handle unicode in webview events. (#3386)

* Handle unicode in webview events.

---------

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

packages/desktop/headless_tests/events.rs

@@ -48,6 +48,7 @@ fn app() -> Element {
             test_form_input {}
             test_form_submit {}
             test_select_multiple_options {}
+            test_unicode {}
         }
     }
 }
@@ -576,3 +577,29 @@ fn test_select_multiple_options() -> Element {
         }
     }
 }
+
+fn test_unicode() -> Element {
+    // emulate an oninput event with a unicode character
+    utils::mock_event_with_extra(
+        "unicode",
+        r#"new InputEvent("input", {
+            inputType: 'insertText',
+            bubbles: true,
+            cancelable: true,
+        })"#,
+        r#"
+            element.value = "🦀";
+        "#,
+    );
+
+    rsx! {
+        input {
+            id: "unicode",
+            oninput: move |event| {
+                println!("{:?}", event.data);
+                assert_eq!(event.data.value(), "🦀");
+                RECEIVED_EVENTS.with_mut(|x| *x += 1);
+            }
+        }
+    }
+}