fix: normalize capture option to boolean in removeEventListener

When an empty object {} is passed as options to removeEventListener,
the capture property was undefined instead of false, causing the
listener comparison to fail. Now normalizeEventHandlerOptions always
converts capture to a boolean.

Co-authored-by: bartlomieju <13602871+bartlomieju@users.noreply.github.com>

Author: Copilot

ext/web/02_event.js

@@ -838,7 +838,9 @@ function normalizeEventHandlerOptions(
       capture: Boolean(options),
     };
   } else {
-    return options;
+    return {
+      capture: Boolean(options.capture),
+    };
   }
 }
 

tests/unit/event_test.ts

@@ -142,6 +142,19 @@ Deno.test(function inspectEvent() {
   );
 });
 
+Deno.test(function removeEventListenerWithEmptyObjectOptions() {
+  const target = new EventTarget();
+  let callCount = 0;
+  const listener = () => {
+    callCount++;
+  };
+
+  target.addEventListener("foo", listener);
+  target.removeEventListener("foo", listener, {});
+  target.dispatchEvent(new Event("foo"));
+  assertEquals(callCount, 0);
+});
+
 Deno.test("default argument is null prototype", () => {
   const event = new Event("test");
   assertEquals(event.bubbles, false);