chore: fix JavaScript lint errors (issue #6417 )

[t-sibiraj]

Resolves #6417

Description

What is the purpose of this pull request?

This pull request:

• Fixes a linting error in lib/node_modules/@stdlib/utils/async/if-then/lib/main.js by replacing the usage of new Array() with an array literal ([]) and .push().

Related Issues

Does this pull request have any related issues?

This pull request:

• resolves #6417

Questions

Any questions for reviewers of this pull request?

No.

Other

Any other information relevant to this pull request? This may include screenshots, references, and/or implementation notes.

No.

Checklist

Please ensure the following tasks are completed before submitting this pull request.

• [x] Read, understood, and followed the contributing guidelines.

---

@stdlib-js/reviewers

[kgryte]

This PR contains various unrelated changes.