Fix category assignment on screen import

[nolanpro]

Issue & Reproduction Steps

Main screen category was not assigned on import so it was not visible in the list of categories

Solution

• Set category IDs using the screen attribute screen_category_id

How to Test

Import the the screen in the ticket and make sure its visible in the list of screens

Related Tickets & Packages

• https://processmaker.atlassian.net/browse/FOUR-8135

Code Review Checklist

• I have pulled this code locally and tested it on my instance, along with any associated packages.
• This code adheres to ProcessMaker Coding Guidelines.
• This code includes a unit test or an E2E test that tests its functionality, or is covered by an existing test.
• This solution fixes the bug reported in the original ticket.
• This solution does not alter the expected output of a component in a way that would break existing Processes.
• This solution does not implement any breaking changes that would invalidate documentation or cause existing Processes to fail.
• This solution has been tested with enterprise packages that rely on its functionality and does not introduce bugs in those packages.
• This code does not duplicate functionality that already exists in the framework or in ProcessMaker.
• This ticket conforms to the PRD associated with this part of ProcessMaker.