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