The copy-on-write is really an implementation detail of the
dependency graph. While there are still cases where there is
no better tag to be used, the ID_RECALC_COPY_ON_WRITE should
not be used in combination with a dedicated tag.
For example if location of object changes the proper tag is
`ID_RECALC_TRANSFORM`. Tagging with `ID_RECALC_TRANSFORM |
ID_RECALC_COPY_ON_WRITE` will seemingly work, but this is
not an intended usage.
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