refactor(pgsql-test): remove auto-authentication from constructor

- Remove implicit auth() call when opts.auth is provided
- auth() method now purely manual, must be called explicitly by developers
- Makes authentication behavior more explicit and predictable per user feedback

Co-Authored-By: Dan Lynch <pyramation@gmail.com>

Author: pyramation

packages/pgsql-test/src/test-client.ts

@@ -30,9 +30,6 @@ export class PgTestClient {
     if (!opts.deferConnect) {
       this.connectPromise = this.client.connect();
       if (opts.trackConnect) opts.trackConnect(this.connectPromise);
-      if (opts.auth) {
-        this.connectPromise = this.connectPromise.then(() => this.auth(opts.auth));
-      }
     }
   }