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.

src/host/config.ts

@@ -70,6 +70,7 @@ export function createRoot<TTag extends string, Instance, RootCtx>(
         effect: null,
         signalDisposers: [],
         prevProps: null,
+        cachedNode: node,
       };
       if (parentFiber) parentFiber.children.push(fiber);
       return fiber;
@@ -106,6 +107,7 @@ export function createRoot<TTag extends string, Instance, RootCtx>(
       effect: null,
       signalDisposers: [],
       prevProps: null,
+      cachedNode: node,
     };
 
     for (const child of el.children) {
@@ -132,6 +134,7 @@ export function createRoot<TTag extends string, Instance, RootCtx>(
         effect: null,
         signalDisposers: [],
         prevProps: null,
+        cachedNode: node,
       };
     }
 
@@ -158,6 +161,7 @@ export function createRoot<TTag extends string, Instance, RootCtx>(
       effect: null,
       signalDisposers: [],
       prevProps: null,
+      cachedNode: node,
     };
 
     for (const child of el.children) {
@@ -281,6 +285,7 @@ export function createRoot<TTag extends string, Instance, RootCtx>(
         effect: null,
         signalDisposers: [],
         prevProps: null,
+        cachedNode: null,
       };
       const payloadChildren = isURoot(node) ? (node as URoot).children : [node];
       for (const child of payloadChildren) {