chore: properly use @alias tag in deprecated utilities

[JoshuaKGoldberg]

PR Checklist

• Addresses an existing open issue: fixes 🛠 Tooling: Remove ignoring of utilities.ts from knip.jsonc #740
• That issue was marked as status: accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

Uses @alias per webpro-nl/knip#996 (comment).

💖

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 61.00%. Comparing base (6fb975c) to head (e2248b6).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #741   +/-   ##
=======================================
  Coverage   61.00%   61.00%           
=======================================
  Files          35       35           
  Lines        2921     2921           
  Branches      463      463           
=======================================
  Hits         1782     1782           
  Misses       1139     1139           

Flag	Coverage Δ
4.8.4	58.61% <ø> (ø)
latest	60.32% <ø> (ø)

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