Fix ExcludeConstraint not forwarding info to parent constructor
Fixed issue where the :class:`.ExcludeConstraint` construct did not
correctly forward the :paramref:`.ExcludeConstraint.info` parameter to
the superclass, causing user-defined metadata to be lost. Pull request
courtesy Wiktor Byrka.
Fixes: #13317
Closes: #13316
Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/13316
Pull-request-sha:
be7f4fee2c40d1986519e93145471faad61021af
Change-Id: Idc4846f02127d1d39a8c638cb03b0379932e9fd6