### Description

Auto-refresh is an awesome new feature! Right now it occurs every [3 seconds](https://github.com/apache/airflow/blob/79d85573591f641db4b5f89a12213e799ec6dea1/airflow/www/static/js/tree.js#L463), and this interval is not configurable. Making this interval configurable would be useful.

### Use case/motivation

On a DAG with many tasks and many active DAG runs, auto-refresh can be a significant strain on the webserver. We observed our production webserver reach 100% CPU today when we had about 30 running DAG runs of a DAG containing about 50 tasks. Being able to increase the interval to guard against this would be helpful.

### Related issues

_No response_

### Are you willing to submit a PR?

- [X] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

airflow/www/views.py
"""Customize permission names for FAB's builtin ViewMenuModelView."""
    class_permission_name = permissions.RESOURCE_VIEW_MENU
    method_permission_name = {
        'list': 'read',
    }
    base_permissions = [
        permissions.ACTION_CAN_READ,
    ]
class CustomUserInfoEditView(UserInfoEditView):
    """Customize permission names for FAB's builtin UserInfoEditView."""
    class_permission_name = permissions.RESOURCE_MY_PROFILE
    route_base = "/userinfoeditview"
    method_permission_name = {
        'this_form_get': 'edit',
        'this_form_post': 'edit',
    }
    base_permissions = [permissions.ACTION_CAN_EDIT, permissions.ACTION_CAN_READ]
class CustomUserStatsChartView(UserStatsChartView):
    """Customize permission names for FAB's builtin UserStatsChartView."""
    class_permission_name = permissions.RESOURCE_USER_STATS_CHART
    route_base = "/userstatschartview"
    method_permission_name = {
        'chart': 'read',
        'list': 'read',
    }
    base_permissions = [permissions.ACTION_CAN_READ]
class MultiResourceUserMixin: