don't setTimeout when eventListener callback is not set

[domakas]

In node environment, when setting timeout with setTimeout(undefined, 0), it produces error TypeError [ERR_INVALID_ARG_TYPE]: The "callback" argument must be of type function. Received undefined. It seems like in this instance is always(?) undefined as _eventsListener which is passed always return undefined here:

pro-gallery/packages/gallery/src/components/gallery/index.tsx

Line 59 in 7662ecb

const _eventsListener = (eventName, eventData, event) => {

This ussually happens in unit test. Seems like browser can handle this.

Maybe this setTimeout can be removed overall?