fix(find): handle directory read errors

lua/neotest/lib/file/find.lua

@@ -21,11 +21,13 @@ function M.find(root, opts)
   local err, dir_handle = uv.fs_opendir(root, max_entries)
   assert(not err, err)
   while dir_handle or #dirs_to_scan > 0 do
-    if not dir_handle then
+    while not dir_handle and #dirs_to_scan > 0 do
       dir = table.remove(dirs_to_scan, 1)
       logger.debug("Scanning directory:", dir)
       err, dir_handle = uv.fs_opendir(root .. sep .. dir, max_entries)
-      assert(not err, err)
+      if err then
+        logger.error("Error opening directory:", dir, err)
+      end
     end
 
     local iter_dir = function()
@@ -48,9 +50,9 @@ function M.find(root, opts)
       local name, path_type = entry.name, entry.type
       local rel_path = name and (dir == "" and name or (dir .. sep .. name))
       if
-        path_type == "directory"
-        and name:sub(1, 1) ~= "."
-        and (not filter_dir or filter_dir(name, rel_path, root))
+          path_type == "directory"
+          and name:sub(1, 1) ~= "."
+          and (not filter_dir or filter_dir(name, rel_path, root))
       then
         dirs_to_scan[#dirs_to_scan + 1] = rel_path
       elseif path_type == "file" then