- Fixes `removeStaleRelations` in CalDAV storage provider to only remove
relations of kinds explicitly declared in the incoming VTODO's
`RELATED-TO` properties
- When a VTODO has no `RELATED-TO` at all (e.g., a parent task from
Tasks.org), no relations are removed — they were auto-created as
inverses by child tasks
- When a VTODO declares specific relation kinds (e.g.,
`RELATED-TO;RELTYPE=PARENT`), only relations of that kind are checked
for staleness; other kinds (like auto-created `subtask` inverses) are
preserved
Fixes#2383
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Co-authored-by: kolaente <k@knt.li>
ada2ebab9e