02a5f18 created the issue

Issue: Right click on any file in a Custom S3 server running on a custom port, and select Copy URL is incorrect.

Expected: The URL contains the custom port number in the URL.
Actual: Custom port number is ignored when copying the URL to the clipboard, therefore it uses https default port of 443.

Steps:

1. Create a custom S3 server on a custom port. (A simple min.io server is fine, or anything else really. Even proxy S3 through a port.)
2. Connect to the server, verify all functions work on the custom port. (It does on 7.4.1)
3. Try and get a pre-signed expiration URL, this URL does not contain the custom port number.

Notes: The issue only occurs on this helpful function to copy URLs; actual connections work fine.