### 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)

clear_db_dags()
    clear_db_import_errors()
    clear_db_serialized_dags()
@pytest.fixture(autouse=True)
def setup():
    clean_db()
    yield
    clean_db()
def test_home(capture_templates, admin_client):
    with capture_templates() as templates:
        resp = admin_client.get("home", follow_redirects=True)
        check_content_in_response("DAGs", resp)
        val_state_color_mapping = (
            "const STATE_COLOR = {"
            '"deferred": "mediumpurple", "failed": "red", '
            '"null": "lightblue", "queued": "gray", '
            '"removed": "lightgrey", "restarting": "violet", "running": "lime", '
            '"scheduled": "tan", '
            '"shutdown": "blue", "skipped": "hotpink", '
            '"success": "green", "up_for_reschedule": "turquoise", '
            '"up_for_retry": "gold", "upstream_failed": "orange"};'
        )
        check_content_in_response(val_state_color_mapping, resp)
    assert len(templates) == 1
    assert templates[0].name == "airflow/dags.html"
    state_color_mapping = State.state_color.copy()
    state_color_mapping["null"] = state_color_mapping.pop(None)
    assert templates[0].local_context["state_color"] == state_color_mapping
def test_home_filter_tags(admin_client):