**Apache Airflow version**: 2.1.0

**Browsers**: Chrome and Firefox

**What happened**:

Before upgrading to 2.1.0

![before](https://user-images.githubusercontent.com/14293802/120359517-c1ca1100-c2d5-11eb-95ba-58ccc0a3ac37.png)

After upgrading to 2.1.0

![after](https://user-images.githubusercontent.com/14293802/120359528-c4c50180-c2d5-11eb-8e04-f34846ea2736.png)

**What you expected to happen**:

Show/Edit/Delete under Security -> Users are available

<!-- What do you think went wrong? -->

**How to reproduce it**:

Go to Security -> Users (as an admin of course) 
airflow/www/views.py
"""Default filters for model"""
        return (
            super()
            .get_query()
            .filter(or_(models.DagModel.is_active, models.DagModel.is_paused))
            .filter(~models.DagModel.is_subdag)
        )
    def get_count_query(self):
        """Default filters for model"""
        return super().get_count_query().filter(models.DagModel.is_active).filter(~models.DagModel.is_subdag)
    @auth.has_access(
        [
            (permissions.ACTION_CAN_READ, permissions.RESOURCE_DAG),
        ]
    )
    @provide_session
    @expose('/autocomplete')
    def autocomplete(self, session=None):