Handle Sequence in _process_multiparam_default_bind

Handle Sequence in _process_multiparam_default_bind

Fixed issue where usage of an explicit :class:`.Sequence` would produce
inconsistent "inline" behavior for an :class:`.Insert` construct that
includes multiple values phrases; the first seq would be inline but
subsequent ones would be "pre-execute", leading to inconsistent sequence
ordering. The sequence expressions are now fully inline.

Fixes: #6361
Change-Id: Ie16794ec0e19979a7e6c8d1bef5716a9fc199889