### Apache Airflow version

2.3.3 (latest released)

### What happened

An URL I saved in the past, `https://astronomer.astronomer.run/dx4o2568/home?tags=test`,  has the tag field in the query parameter though I was not aware of this. When I clicked on the URL, I was confused because I did not see any DAGs when I should have a bunch.

After closer inspection, I realized that the URL has the tag field in the query parameter but then noticed that the tag box in the Airflow UI wasn't properly populated.

![screen_shot_2022-07-12_at_8 11 07_am](https://user-images.githubusercontent.com/5952735/182496710-601b4a98-aacb-4482-bb9f-bb3fdf9e265f.png)


### What you think should happen instead

When I clicked on the URL, the tag box should have been populated with the strings in the URL.

### How to reproduce

Start an Airflow deployment with some DAGs and add the tag query parameter. More specifically, it has to be a tag that is not used by any DAG.

### Operating System

N/A

### Versions of Apache Airflow Providers

_No response_

### Deployment

Astronomer

### Deployment details

_No response_

### Anything else

_No response_

### Are you willing to submit 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)

resp = admin_client.post("task_stats", follow_redirects=True)
    assert resp.status_code == 200
@conf_vars({("webserver", "instance_name"): "Site Title Test"})
def test_page_instance_name(admin_client):
    resp = admin_client.get("home", follow_redirects=True)
    check_content_in_response("Site Title Test", resp)
def test_page_instance_name_xss_prevention(admin_client):
    xss_string = "<script>alert('Give me your credit card number')</script>"
    with conf_vars({("webserver", "instance_name"): xss_string}):
        resp = admin_client.get("home", follow_redirects=True)
        escaped_xss_string = "&lt;script&gt;alert(&#39;Give me your credit card number&#39;)&lt;/script&gt;"
        check_content_in_response(escaped_xss_string, resp)
        check_content_not_in_response(xss_string, resp)
@conf_vars(
    {
        ("webserver", "instance_name"): "<b>Bold Site Title Test</b>",
        ("webserver", "instance_name_has_markup"): "True",
    }
)
def test_page_instance_name_with_markup(admin_client):
    resp = admin_client.get("home", follow_redirects=True)
    check_content_in_response("<b>Bold Site Title Test</b>", resp)