Fix false positive for simple parenthesized array types with array-simple (#4844)

[MaximeKjaer]

PR checklist

• Addresses an existing issue: fixes Parenthesized simple types are not fixed correctly when using array-type array-simple #4844
• New feature, bugfix, or enhancement
  • Includes tests
• Documentation update

Overview of change:

(T) is now considered a simple type if T is a simple type.

Is there anything you'd like reviewers to focus on?

CHANGELOG.md entry:

[bugfix] Fix false positive for simple parenthesized array types with array-simple (#4844)

[palantirtech]

Thanks for your interest in palantir/tslint, @MaximeKjaer! Before we can accept your pull request, you need to sign our contributor license agreement - just visit https://cla.palantir.com/ and follow the instructions. Once you sign, I'll automatically update this pull request.

[JoshuaKGoldberg]

Great first PR, thanks @MaximeKjaer! 🚀