[META] Eliminate parent::prepareRow() calls with ignored return value from all migrate source plugins

Problem/Motivation

Whenever a migrate source plugin does not check (or does not returns with) the return value of its parent's prepareRow() method, it causes that it is impossible to skip rows by returning FALSE in hook_migrate_prepare_row() or in hook_migrate_MIGRATION_ID_prepare_row()implementations.

See SourcePluginBase::prepareRow() (link to git.drupalcode.org).

Remaining tasks

• Identify affected migrate source plugins.

Tasks to be done

1. #3187426: Ignored parent::prepareRow() return value in TermTranslation and in TermLocalizedTranslation

Finished tasks