Delete default widgets in mautic core so that they fall back to default.json contents

delete_default_widgets.sql

DELETE FROM widgets WHERE type IN ('created.leads.in.time','page.hits.in.time','submissions.in.time','recent.activity','upcoming.emails','created.leads.in.time','map.of.leads','top.lists','page.hits.in.time','emails.in.time','unique.vs.returning.leads','ignored.vs.read.emails','anonymous.vs.identified.leads','dwell.times','recent.activity','upcoming.emails');