btr_root_raise_and_insert(), btr_lift_page_up(),
rtr_page_split_and_insert(): Reset DB_FAIL from a failure to
copy records on a ROW_FORMAT=COMPRESSED page to DB_SUCCESS
before retrying.

This fixes a regression that was introduced by
commit 0b47c126 (MDEV-13542).

btr_root_raise_and_insert(): Remove a redundant condition.
btr_page_split_and_insert() will invoke btr_page_split_and_insert()
if needed.