fix(lang): neotest not loading rust tests (#3544)

fixes https://github.com/LazyVim/LazyVim/issues/3543

lua/lazyvim/plugins/extras/lang/rust.lua

@@ -119,12 +119,10 @@ return {
 
   {
     "nvim-neotest/neotest",
-    optional = true,
-    opts = function(_, opts)
-      opts.adapters = opts.adapters or {}
-      vim.list_extend(opts.adapters, {
-        require("rustaceanvim.neotest"),
-      })
-    end,
+    opts = {
+      adapters = {
+        ["rustaceanvim.neotest"] = {},
+      },
+    },
   },
 }