data-poll-interval is not respected for amp-live-list and polling always happens at 15 seconds

Trying to add data-poll-interval value as '45000' as I want my server to be polled at every 45 seconds. But it is not working and my server is always polled at every 15 seconds.

Here is the code that I am using:
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You have updates

Start at the amp-live-list component entry point and reproduce the supplied markup with data-poll-interval="45000". Done means polling occurs every 45 seconds rather than the observed 15 seconds, with coverage for this behavior.

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