Fix EZP-23424: clear content/info/remoteId persistence cache

JIRA: https://jira.ez.no/browse/EZP-23424

When persistence cache is cleared (from legacy, through the `content/cache` event),
 cache for `'content', 'info', 'remoteId'` was not being cleared.

Tests: manual

TODO:
- [x] Update / add tests
Right, I actually just looked at ContentHandler, which does clear the full "tree" most of the times
https://github.com/ezsystems/ezpublish-kernel/blob/master/eZ/Publish/Core/Persistence/Cache/ContentHandler.php#L186 

Indeed that indeed should be more effective, amending commit