Event list report isn't showing 'other' event details

When viewing the detailed information of an event from the Events list report, the Other event parameters information is not shown (it's intended to show the @property-read array $other doc from the event classes)

See: https://docs.moodle.org/dev/Events_API#PHP_docs

The code is looking for a set number of whitespace (5 characters), but almost every class uses 6 characters, and my IDE (PHPStorm) also uses 6 characters

(I'm almost certain this worked in the past, but can't find where this changed to not working)

Discovered while davidmatamoros was creating events for MDL-70795