fix(docs): deduplicate version entries in dropdown when mainnet and testnet share the same version

syncVersionsFromConfig now deduplicates configVersions via Set,
preventing duplicate dropdown entries when multiple release types
map to the same version string.

Author: AztecBot

docs/docusaurus.config.js

@@ -24,9 +24,9 @@ const macros = require("./src/katex-macros.js");
 function syncVersionsFromConfig(configFile, versionsFile, versionedDocsDir) {
   const config = require(configFile);
   const docsDir = path.join(__dirname, versionedDocsDir);
-  const configVersions = Object.values(config).filter(
+  const configVersions = [...new Set(Object.values(config).filter(
     (v) => v && fs.existsSync(path.join(docsDir, `version-${v}`))
-  );
+  ))];
   const configVersionSet = new Set(Object.values(config).filter(Boolean));
   const extraVersions = fs.existsSync(docsDir)
     ? fs.readdirSync(docsDir)

docs/network_versions.json

@@ -1,4 +1,3 @@
 [
-  "v4.1.3",
   "v4.1.3"
 ]