RelatedActivityLogSource emits type='activity_log' — type filter never matches 'related_activity_log'

[ManukMinasyan]

Summary

RelatedActivityLogSource::makeEntry() (src/Timeline/Sources/RelatedActivityLogSource.php) sets type: 'activity_log' on every entry — same value as ActivityLogSource. Users cannot filter the timeline to "only entries from related models' spatie logs" via ->ofType(['related_activity_log']).

Repro

$person->timeline()
    ->fromActivityLogOf(['emails'])
    ->ofType(['related_activity_log'])
    ->get();
// → empty collection (filter never matches)

Confusion

The source_priorities config has a related_activity_log key that DOES work — it sets the priority for RelatedActivityLogSource entries. So the priority axis and the entry-type axis disagree.

Recommended fix

Choose one (both are BC-breaking in different ways):

1. Change RelatedActivityLogSource to emit type='related_activity_log' — restores symmetry with the priority-key axis. Breaks any user filtering on type='activity_log' to mean "all spatie log entries."
2. Drop the priority key related_activity_log from config and accept that all spatie-log entries collide on a single "activity_log" type. Users who need to distinguish own- vs related-log entries do it via $entry->relatedModel === null.

Tracked by docs spec

Finding A2 in the upcoming docs restructure.