handleScrollRestoration - Add script to head

This will set history.scrollRestoration to "manual" on page start, if hash starts with "link-"

docusaurus.config.js

@@ -102,4 +102,10 @@ module.exports = {
       },
     ],
   ],
+  scripts: [
+    {
+      src:
+        '/scripts/handleScrollRestoration.js',
+    },
+  ]
 };

static/scripts/handleScrollRestoration.js

@@ -0,0 +1,8 @@
+var hash = window.location.hash;
+var hashName = hash.substring(1, hash.length);
+
+if (hashName.startsWith("link-")) {
+  if ("scrollRestoration" in history) {
+    history.scrollRestoration = "manual";
+  }
+}