### Apache Airflow version

Other Airflow 2 version (please specify below)

### What happened

```
$ curl localhost:8080/airflow/
<!doctype html>
<html lang=en>
<title>Redirecting...</title>
<h1>Redirecting...</h1>
<p>You should be redirected automatically to the target URL: <a href="http://localhost:8080/airflow/">http://localhost:8080/airflow/</a>. If not, click the link.
```

### What you think should happen instead

At least not circular redirect.

### How to reproduce

generate yaml:

```
helm template --name-template=airflow  ~/downloads/airflow > airflow.yaml
```

add base_url in webserver section and remove health and ready check in webserver(to keep pod alive):
```
    [webserver]
    enable_proxy_fix = True
    rbac = True
    base_url = http://my.domain.com/airflow/
```

### Operating System

Ubuntu 22.04.2 LTS

### Versions of Apache Airflow Providers

apache-airflow==2.5.3
apache-airflow-providers-amazon==7.3.0
apache-airflow-providers-celery==3.1.0
apache-airflow-providers-cncf-kubernetes==5.2.2
apache-airflow-providers-common-sql==1.3.4
apache-airflow-providers-docker==3.5.1
apache-airflow-providers-elasticsearch==4.4.0
apache-airflow-providers-ftp==3.3.1
apache-airflow-providers-google==8.11.0
apache-airflow-providers-grpc==3.1.0
apache-airflow-providers-hashicorp==3.3.0
apache-airflow-providers-http==4.2.0
apache-airflow-providers-imap==3.1.1
apache-airflow-providers-microsoft-azure==5.2.1
apache-airflow-providers-mysql==4.0.2
apache-airflow-providers-odbc==3.2.1
apache-airflow-providers-postgres==5.4.0
apache-airflow-providers-redis==3.1.0
apache-airflow-providers-sendgrid==3.1.0
apache-airflow-providers-sftp==4.2.4
apache-airflow-providers-slack==7.2.0
apache-airflow-providers-snowflake==4.0.4
apache-airflow-providers-sqlite==3.3.1
apache-airflow-providers-ssh==3.5.0

### Deployment

Official Apache Airflow Helm Chart

### Deployment details

_No response_

### Anything else

_No response_

### Are you willing to submit PR?

- [ ] 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)

app = application.cached_app(testing=True)
        assert app.config["PERMANENT_SESSION_LIFETIME"] == timedelta(minutes=3600)
    @conf_vars({("webserver", "cookie_samesite"): ""})
    @dont_initialize_flask_app_submodules
    def test_correct_default_is_set_for_cookie_samesite(self):
        """An empty 'cookie_samesite' should be corrected to 'Lax' with a deprecation warning."""
        with pytest.deprecated_call():
            app = application.cached_app(testing=True)
        assert app.config["SESSION_COOKIE_SAMESITE"] == "Lax"
    @pytest.mark.parametrize(
        "hash_method, result, exception",
        [
            ("sha512", hashlib.sha512, None),
            ("sha384", hashlib.sha384, None),
            ("sha256", hashlib.sha256, None),
            ("sha224", hashlib.sha224, None),
            ("sha1", hashlib.sha1, None),
            ("md5", hashlib.md5, None),
            (None, hashlib.md5, None),
            ("invalid", None, AirflowConfigException),
        ],
    )
    @dont_initialize_flask_app_submodules
    def test_should_respect_caching_hash_method(self, hash_method, result, exception):