
This PR makes it possible to remove the hard-coded 32.0 unit padding coming from ListTile when trailing is not null. Which it always it as `ExpansionTile` always provides a widget there. Currently there is no way to remove it and people have to hack around it: e.g. https://stackoverflow.com/questions/54714836/how-to-remove-default-padding-from-expansiontiles-header The issue is quite old and I came across it today and decided to put together a quick fix. Fixes #145268 The change should be non-breaking as the default stays the same. But I have no issue with changing something if requested. (naming-wise, functionality-wise etc...)