Prevent Nuxeo startup on SQL type mismatch

When the database contains columns of unexpected types, we log an error like

ERROR [main] [org.nuxeo.ecm.core.storage.sql.jdbc.JDBCMapper] SQL type mismatch for "hierarchy"."changetoken": expected -5, database has 12 / varchar (250)

But we don't prevent Nuxeo startup, which we should do in strict mode as this type mismatch usually leads to further errors when running.