### Apache Airflow version

2.7.1

### What happened

Airflow's postgres connection configuration form has a field called  'schema'  which is misguiding as values mentioned here is used to refer to the database name instead of the schema name. It should be correctly named to 'database' or 'dbname'

### What you think should happen instead

_No response_

### How to reproduce

create a connection on the web UI and choose connection type as postgres.
Have a dag connect to an postgres server with multiple databases
provide the database name in the 'schema' field of the connection form- this would work if nothing else is incorrect in the etl
now change the value in the schema field of the connection form to refer to a schema- this will fail unexpectedly as the schema name field actually points to the database name.

### Operating System

Windows and Linux

### Versions of Apache Airflow Providers

2.71

### Deployment

Docker-Compose

### 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 __future__ import annotations
import os
import warnings
from contextlib import closing
from copy import deepcopy
from typing import TYPE_CHECKING, Any, Iterable, Union
import psycopg2
import psycopg2.extensions
import psycopg2.extras
from psycopg2.extras import DictCursor, NamedTupleCursor, RealDictCursor
from airflow.exceptions import AirflowProviderDeprecationWarning
from airflow.providers.common.sql.hooks.sql import DbApiHook
if TYPE_CHECKING:
    from psycopg2.extensions import connection
    from airflow.models.connection import Connection
    from airflow.providers.openlineage.sqlparser import DatabaseInfo
CursorType = Union[DictCursor, RealDictCursor, NamedTupleCursor]
class PostgresHook(DbApiHook):