SqlBulkCopy copies only first row when performing bulk copy for JSON datatype

[apoorvdeshmukh]

BulkCopy for JSON datatype transfers only first row from source table to destination table when bulk copy operation is being performed.
All rows of the source table should be copied on the destination table.

[cheenamalhotra]

Discussed offline, this is a server side bug and no client side changes are needed. Moving this to future milestone as test cases will need be added to validate the behavior when fix is validated.

[apoorvdeshmukh]

This is fixed in the latest release and fix is validated with the tests.