`GenericDialect` should support multi-table DELETE and DELETE without FROM clause

According to the design policy, `GenericDialect` is intended to parse any SQL that other dialects can handle, but it currently fails to parse multi-table DELETE statements and DELETE statements without a FROM clause.

I think the expected behavior is that the following tests should also pass with `GenericDialect`.

https://github.com/apache/datafusion-sqlparser-rs/blob/2182f7ea71242a7e9674932d559baef67dae522d/tests/sqlparser_common.rs#L688-L735

Comece pelas linhas 688-735 de tests/sqlparser_common.rs e execute os testes referenciados usando GenericDialect. Rastreie o caminho de parsing para instruções DELETE com várias tabelas e instruções DELETE sem uma cláusula FROM. Está concluído quando os dois grupos de testes existentes passarem com GenericDialect.

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