Do not launch first build automatically when default trigger is "Polling repository for changes" scheduled at certain time

We have a plan where my default trigger is based on "Polling the Repository for changes" scheduled at 1.00am to make nightly builds only if there are changes in the repository. Automatic branching is enabled, so every time a new branch is created it is automatically built instead of waiting until 1.00am.

This behavior becomes a problem since our build time is very long and we create branches very often, so our build agents are always busy and cannot attend urgent demands. It would be nice to launch the first build of a newly created branch only when the default trigger is triggered.