[FIX] web: correctly check editable list validity

The editable list has a `is_valid` method which checks that all the
records it contains have valid data. The problem is that it was
considering that all the records in the `dataset.cache` were part of
the x2x field the editable list is working with. This is wrong as the
`dataset.cache` can contain information which are not part of the
editable list anymore.
See the commit which introduced the use of the `dataset.cache`:
a9d20d9fa04b1dbb350663652e0996e258ac6d31

This was causing issues with rare cases of an editable list which
contains another editable list (even invisible) which was sharing
common information with its parent editable list.

opw-710627

0 files changed, 0 insertions, 0 deletions