all_texts walked every node of a visible, unlocked layer and checked
only each text object's own lock and visibility, so a text object that
was itself shown and unlocked inside a locked or hidden group was found
and replaced. It now stops at a hidden or locked group, as it stops at
a hidden or locked layer: Find and Replace and Find Next with no ids
leave that type alone, however deep the group is.
Fixes#5900
Hamza
d316edaad9