one worker test got broken since introduced Ensure test files are executed in alphabetical order

[kobenguyent]

Since introduced #5386, one worker test got broken

1) Workers
       should run worker with custom config:

      Uncaught AssertionError: expected 4 to equal 3
      + expected - actual

      -4
      +3
      
      at Workers.<anonymous> (test/unit/worker_test.js:113:27)
      at Workers.emit (node:events:519:28)
      at Workers._finishRun (lib/workers.js:581:10)
      at Worker.<anonymous> (lib/workers.js:568:14)
      at Worker.emit (node:events:531:35)
      at [kOnExit] (node:internal/worker:318:10)
      at Worker.<computed>.onexit (node:internal/worker:232:20)

@DenysKuchma may you take a look please?
PR: #5394