fix: use Object.hasOwn in isYogaProp to avoid Object.prototype false positives

"constructor" in {} returns true because it hits Object.prototype.
Using Object.hasOwn ensures only actual yoga prop keys are recognized.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

packages/runtime-tests/integration/components/text.test.tsx

@@ -185,7 +185,7 @@ test.skip("remeasure text when text nodes are changed — null child crashes yog
   expect(lastFrame()).toBe("abcx");
 });
 
-test.skip("text with content 'constructor' wraps correctly — bug in text node lookup", async () => {
+test("text with content 'constructor' wraps correctly", async () => {
   const { lastFrame } = await render(
     defineComponent(() => () => <Text>constructor</Text>),
     { columns: 100 },

packages/runtime/src/host/yoga.ts

@@ -224,7 +224,7 @@ function toJustify(v: string): Justify {
 }
 
 export function isYogaProp(key: string): boolean {
-  return key in YOGA_PROP_SETTERS;
+  return Object.hasOwn(YOGA_PROP_SETTERS, key);
 }
 
 const RESETTABLE_PROPS = new Set([