### 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)

from flask import request
            
            assert request.remote_addr == "192.168.0.1"
            
            
            assert request.url == "https://valid:445/proxy-prefix/debug"
            return Response("success")
        app.view_functions["debug"] = debug_view
        new_environ = {
            "PATH_INFO": "/debug",
            "REMOTE_ADDR": "192.168.0.2",
            "HTTP_HOST": "invalid:9000",
            "HTTP_X_FORWARDED_FOR": "192.168.0.1",
            "HTTP_X_FORWARDED_PROTO": "https",
            "HTTP_X_FORWARDED_HOST": "valid",
            "HTTP_X_FORWARDED_PORT": "445",
            "HTTP_X_FORWARDED_PREFIX": "/proxy-prefix",
        }
        environ = create_environ(environ_overrides=new_environ)
        response = Response.from_app(app, environ)
        assert b"success" == response.get_data()
        assert response.status_code == 200
    @conf_vars(
        {
            ("webserver", "base_url"): "http://localhost:8080/internal-client",
        }
    )
    @dont_initialize_flask_app_submodules
    def test_should_respect_base_url_ignore_proxy_headers(self):