### Summary

Add type hints to `ansible.utils.display::Display`

### Issue Type

Feature Idea

### Component Name

lib/ansible/utils/display.py
self._become_plugin = plugin
    def update_vars(self, variables):
        '''
        Adds 'magic' variables relating to connections to the variable dictionary provided.
        In case users need to access from the play, this is a legacy from runner.
        '''
        for prop, var_list in C.MAGIC_VARIABLE_MAPPING.items():
            try:
                if 'become' in prop:
                    continue
                var_val = getattr(self, prop)
                for var_opt in var_list:
                    if var_opt not in variables and var_val is not None:
                        variables[var_opt] = var_val
            except AttributeError:
                continue