Re-enabled NamedSubject RSpec rule which was accidentlaly overwritten

[GarryHurleyJr]

What are you trying to accomplish?

The NamedSubject Rubocop rule was accidentally disabled after work had been completed on it. This will re-enable that cop for main so that we can avoid the rebasing issues we have come across

Anything you want to highlight for special attention from reviewers?

This change is merely putting a named subject in for the generic 'subject' designator.

How will you know you've accomplished your goal?

Resetting branches to main will include this rule in the enabled ruleset.

Checklist

• I have run the complete test suite to ensure all tests and linters pass.
• I have thoroughly tested my code changes to ensure they work as expected, including adding additional tests for new functionality.
• I have written clear and descriptive commit messages.
• I have provided a detailed description of the changes in the pull request, including the problem it addresses, how it fixes the problem, and any relevant details about the implementation.
• I have ensured that the code is well-documented and easy to understand.