CoreInstaller.php: FOREIGN_KEY_CHECKS=0 to drop all tables

Answering "yes" to "Continue?" just throw errors and fail.

  SQLSTATE[23000]: Integrity constraint violation: 1451 Cannot delete or update a parent row: a foreign key constraint fails

src/bundle/RepositoryInstaller/Installer/CoreInstaller.php

@@ -98,7 +98,7 @@ protected function getDropSqlStatementsForExistingSchema(
         AbstractPlatform $databasePlatform
     ): array {
         $existingSchema = $this->db->getSchemaManager()->createSchema();
-        $statements = [];
+        $statements = ['SET FOREIGN_KEY_CHECKS=0'];
         // reverse table order for clean-up (due to FKs)
         $tables = array_reverse($newSchema->getTables());
         // cleanup pre-existing database