* web: clear out selecteds list after an API event to ensure a fresh copy of the policies-to-delete list
* Prettier had opinions.
* web: A better fix
This fix creates a new property of Table, 'clearOnRefresh', which
automatically empties the `selectedElements` list when an EVENT_REFRESH
event completes. Set this flag on any table that uses the
`selectedElements` list for bulk deletion; this ensures that stale
data in the `selectedElements` list will not persist and interfere
with future deletion events.