fix: include skipQueue in queueSize getter when using AbortSignal

[lb1192176991-lab]

Fixes #1029

When tasks are submitted with an AbortSignal, they may end up in skipQueue instead of taskQueue. The queueSize getter only accounted for taskQueue.length, causing queueSize to report 0 even when tasks were waiting.

This fix adds this.skipQueue.length to the queueSize calculation.

[lb1192176991-lab]

Hi maintainers! 👋

This PR fixes #1029 where queueSize returns 0 when tasks are submitted with an AbortSignal, because the getter only checked taskQueue.length but not skipQueue.length.

The fix is a one-line change: return this.taskQueue.length + this.skipQueue.length;

Would appreciate a review when you have time. Happy to make any adjustments!

Thanks!

[metcoder95]

can you just alter the affected file, here it seems you are adding a totally new file