fix(modules,lsp/tree): nvim-tree broken when lsp disabled (#410)

Author: tuanbass

lua/doom/modules/features/explorer/init.lua

@@ -114,7 +114,7 @@ explorer.configs["nvim-tree.lua"] = function()
 
   local tree_cb = require("nvim-tree.config").nvim_tree_callback
 
-  local override_table
+  local override_table = {}
   if is_module_enabled("features", "lsp") then
     override_table = {
       diagnostics = {