fix sqlite regex for quoted fk, pk names

fix sqlite regex for quoted fk, pk names

Fixed issue where SQLite dialect would fail to reflect constraint names
that contained uppercase letters or other characters requiring quoting. The
regular expressions used to parse primary key, foreign key, and unique
constraint names from the ``CREATE TABLE`` statement have been updated to
properly handle both quoted and unquoted constraint names.

Fixes: #12954
Change-Id: If5c24f536795e5db867d857242013610a04638fc