fix(Bun.SQL) fix SSLRequest (#22378)

### What does this PR do?
Fixes https://github.com/oven-sh/bun/issues/22312
Fixes https://github.com/oven-sh/bun/issues/22313

The correct flow for TLS handshaking is:

Server sending
[Protocol::Handshake](https://dev.mysql.com/doc/dev/mysql-server/8.4.5/page_protocol_connection_phase_packets_protocol_handshake.html)
Client replying with
[Protocol::SSLRequest:](https://dev.mysql.com/doc/dev/mysql-server/8.4.5/page_protocol_connection_phase_packets_protocol_ssl_request.html)
The usual SSL exchange leading to establishing SSL connection
Client sends
[Protocol::HandshakeResponse:](https://dev.mysql.com/doc/dev/mysql-server/8.4.5/page_protocol_connection_phase_packets_protocol_handshake_response.html)

<img width="460" height="305" alt="Screenshot 2025-09-03 at 15 02 25"
src="https://github.com/user-attachments/assets/091bbc54-75bc-44ac-98b8-5996e8d69ed8"
/>

Source:
https://dev.mysql.com/doc/dev/mysql-server/8.4.5/page_protocol_connection_phase.html

### How did you verify your code works?
Tests

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

src/sql/postgres/PostgresSQLConnection.zig

@@ -443,9 +443,8 @@ pub fn onHandshake(this: *PostgresSQLConnection, success: i32, ssl_error: uws.us
                         }
                     }
                 },
-                else => {
-                    return;
-                },
+                // require is the same as prefer
+                .require, .prefer, .disable => {},
             }
         }
     } else {