fix: spell_suggest if cursor is at last char of word

fix #1977

lua/telescope/builtin/internal.lua

@@ -1233,6 +1233,7 @@ internal.spell_suggest = function(opts)
           return
         end
 
+        action_state.get_current_picker(prompt_bufnr)._original_mode = "i"
         actions.close(prompt_bufnr)
         vim.cmd("normal! ciw" .. selection[1])
         vim.cmd "stopinsert"