fix(runtime): remove false browser diagnostics

packages/csr/test/reactive.test.ts

@@ -704,7 +704,7 @@ test("a camelCase output reaches a parent binding despite attribute lowercasing"
   expect(win.document.querySelector("#out")?.textContent).toBe("yes");
 });
 
-test("development runtime warns once for an output with no parent binding", () => {
+test("development runtime allows an output with no parent binding", () => {
   const win = new Window() as unknown as Window & Record<string, unknown>;
   win.document.body.innerHTML = `<div data-scope="" data-wrn-events="complete"><button data-on-click="output.complete({})">go</button></div>`;
   (globalThis as Record<string, unknown>).window = win;
@@ -732,8 +732,7 @@ test("development runtime warns once for an output with no parent binding", () =
   } finally {
     console.warn = originalWarn;
   }
-  expect(warnings).toHaveLength(1);
-  expect(String(warnings[0]?.[0])).toContain("WRN-DEV-OUTPUT-UNHANDLED");
+  expect(warnings).toHaveLength(0);
 });
 
 test("development runtime warns when a component binding names a missing function", () => {