fix: allow to abort :Rest env select command

Author: boltlessengineer

lua/rest-nvim/config/init.lua

@@ -176,7 +176,7 @@ local default_config = {
     ---@type boolean
     enable = true,
     ---@type string
-    pattern = "%.env.*"
+    pattern = ".*%.env.*"
   },
   ---@class rest.Config.UI
   ui = {

lua/rest-nvim/dotenv.lua

@@ -78,7 +78,9 @@ function M.select_file(bufnr)
   vim.ui.select(M.find_env_files(), {
      prompt = 'Select env files',
   }, function (item, _idx)
-    M.register_file(item, bufnr)
+    if item then
+      M.register_file(item, bufnr)
+    end
   end)
 end