Iceberg $files table not show delete files

[0xffmeta]

For iceberg v2 format, if query $files metadata table, e.g.
select * from tmp."test_table$files" where content =1 limit 10;
it will return empty result, the reason is that FilesTable only iterates DataFile, however I think it needs to scan DeleteFile as well.

trino/plugin/trino-iceberg/src/main/java/io/trino/plugin/iceberg/FilesTable.java

Line 179 in 64b0b7d

return getRecord(planFilesIterator.next().file());

#16232 for the fix.

[alexjo2144]

@krvikash volunteered to take a look at this, thanks for reporting

I didn't see the PR haha, thanks for the fix!