Feature Request: Add the ability for Studio to change the port number used by a specific WordPress installation.

### What

Add to settings an option to specify the PORT where a specific WordPress site is served from

### Why

Lately, I’ve been running into several conflicts between WordPress Studio sites and WordPress instances launched from Docker containers (via `wp-env`), mainly due to port collisions.

I’m not entirely sure how Studio assigns ports to each WordPress instance, but having the option to manually set a specific port would be extremely helpful to prevent these conflicts with other development environments.

### How

_No response_

No files, tests, or entry points are named. Start by locating Studio’s settings UI and the code that assigns ports to individual WordPress installations, then trace how a manually selected port would be stored and applied. Done means a specific installation can use a chosen port without conflicting with other Studio or Docker-based instances.

Written by the indexing model from the issue text.