The flag that skips objects for snapping (`BA_SNAP_FIX_DEPS_FIASCO`) is
set for all objects that have a `DEG_OB_COMP_TRANSFORM` relation.
However, when the **Affect Only Parent** option is enabled, children
are not transformed and therefore could still be snapped to.
Despite this, the `DEG_OB_COMP_TRANSFORM` dependency remains present on
them.
To address this, a new callback was introduced that skips
Transform-to-Transform dependencies while preserving
Transform-to-Geometry dependencies in this scenario.
This approach may introduce some false positives, leading to spurious
dependency cycles (e.g., when constraints are involved).
Nevertheless, the trade-off favors accepting these false positives
rather than disabling the feature altogether.
Also make non-functional change that just removes a flag before the snap
loop, thus avoiding checking if the flag exists inside the loop.
Ref !142007
b42e4052b7