Correct for MySQL 8.0 table and schema names in FK reflection

Correct for MySQL 8.0 table and schema names in FK reflection

Added another fix for an upstream MySQL 8 issue where a case sensitive
table name is reported incorrectly in foreign key constraint reflection,
this is an extension of the fix first added for :ticket:`4344` which
affects a case sensitive column name.  The new issue occurs through MySQL
8.0.17, so the general logic of the 88718 fix remains in place.

.. seealso::

    https://bugs.mysql.com/bug.php?id=96365 - upstream bug

Fixes: #4751
Change-Id: I391903565db919b85b6b3c62c28f4b90ee596135
(cherry picked from commit 9a6654e3af74710b55feb6b5b0218dc767d7013b)