AK: Give IntrusiveBinaryHeap template args named types

Works around https://gcc.gnu.org/PR70413. Without this, the next
commit would cause -Wsubobject-linkage warnings for AK/BinaryHeap.h
when used in LibCompress/Huffman.h.

We can undo this once we're on GCC 14 everywhere.

No behavior change.

AK/BinaryHeap.h

@@ -166,11 +166,15 @@ private:
         V value;
     };
 
-    IntrusiveBinaryHeap<
-        Node,
-        decltype([](Node const& a, Node const& b) { return a.key < b.key; }),
-        decltype([](Node&, size_t) {})>
-        m_heap;
+    struct NodeComparator {
+        bool operator()(Node const& a, Node const& b) const { return a.key < b.key; }
+    };
+
+    struct NodeIndexSetter {
+        void operator()(Node&, size_t) const { }
+    };
+
+    IntrusiveBinaryHeap<Node, NodeComparator, NodeIndexSetter> m_heap;
 };
 
 }