Profile configuration parameter does not function [#3198004]

Problem/Motivation

When adding a profile configuration parameter in the migration YAML this has no effect due to
elseif (empty($this->configuration['profile']
which should be
elseif (!empty($this->configuration['profile']

Steps to reproduce

Use a profile config parameter

Proposed resolution

Correct the check for this parameter.

Issue fork migrate_process_s3-3198004

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3198004-profile-configuration-parameter changes, plain diff MR !1
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