Fix table of content documentation

docs/source/_static/collapse_overloads.js

@@ -18,3 +18,50 @@ document.addEventListener("DOMContentLoaded", () => {
       }
     });
   });
+
+document.addEventListener("DOMContentLoaded", () => {
+  const toc = document.querySelector(".toctree-wrapper");
+  if (!toc) return;
+
+  const leaf_traversal_fn = (leaf) => {
+    try {
+      const links = leaf.querySelectorAll("a");
+      if (!links) return;
+      const seen = new Set();
+      links.forEach(link => {
+        let text = link.textContent.trim();
+        let norm = text.replace(/\(\)$/, ""); // strip trailing ()
+
+        if (seen.has(norm)) {
+          // hide duplicate
+          link.parentElement.style.display = "none";
+        } else {
+          seen.add(norm);
+        }
+      });
+    } catch (error) {
+      console.error(error);
+    }
+  };
+  queue = [toc.querySelector("li")];
+  while (queue.length > 0) {
+    const tree = queue.shift();
+    try {
+      if (tree.childElementCount > 1 &&
+          tree.firstChild.hasAttribute("href") &&
+          tree.firstChild.attributes["href"].value.includes("#")) {
+        leaf_traversal_fn(tree.childNodes[1]);
+      } else {
+        const child = tree.querySelector("li");
+        if (child) {
+          queue.push(child);
+        }
+      }
+    } catch (error) {
+      console.error(error);
+    }
+    if (tree.nextElementSibling) {
+      queue.push(tree.nextElementSibling);
+    }
+  }
+  });