prevent duplicate if overlapping records are disabled (#2311)

config/packages/doctrine.yaml

@@ -13,6 +13,7 @@ doctrine:
             default:
                 # existing migrations will fail if the schema filter is activated
                 #schema_filter: ~^(?!(bundle_migration_|kimai2_sessions))~
+                # Removing "resolve:" would fail eg. SQLite URLs
                 url: '%env(resolve:DATABASE_URL)%'
                 driver: 'pdo_mysql'
                 # this setting prevents automatic database detection and finds a lot of false-negatives on doctrine:migrations:diff