feat: add Value.Equal bail-out check before reconciliation

Add TypeBox Value.Equal deep-comparison as first optimization layer
in reconcileProps. When a fiber's cached node is deep-equal to the
next node, skip prepareUpdate, commitUpdate, and children
reconciliation entirely. New cachedNode field on Fiber stores the
last reconciled node for comparison.

test/lis-move-detection.test.ts

@@ -14,6 +14,7 @@ function makeFiber(key: string | undefined, tag: string): Fiber<string> {
     effect: null,
     signalDisposers: [],
     prevProps: null,
+    cachedNode: null,
   };
 }