**Describe what's wrong**

Get data from #29693.

```
ALTER TABLE hackernews
    ADD COLUMN words Array(LowCardinality(String))
    DEFAULT arraySort(
              arrayDistinct(
                extractAll(
                  lower(
                    decodeXMLComponent(
                      extractTextFromHTML(text))),
                  '\w+')));

ALTER TABLE hackernews MATERIALIZE COLUMN words;

ALTER TABLE hackernews ADD INDEX words_bf (words) TYPE bloom_filter(0.01) GRANULARITY 1;

ALTER TABLE hackernews MATERIALIZE INDEX words_bf;

SELECT * FROM system.merges \G;

...

SELECT count() FROM hackernews WHERE has(words, 'clickhouse');

Code: 49. DB::Exception: Received from localhost:9000. DB::Exception: Got empty stream for SerializationLowCardinality keys.: (while reading column words): (while reading from part /var/lib/clickhouse/store/f43/f4347434-b836-44ba-b434-7434b836f4ba/all_1_2874_5_2884/ from mark 46 with max_rows_to_read = 8192): While executing MergeTreeThread. (LOGICAL_ERROR)
```


**Does it reproduce on recent release?**

master.
const String & column_name,
    const NamesAndTypesList & all_columns,
    const std::unordered_map<String, ASTPtr> & column_to_update_expression)
{
    std::vector<ASTPtr> res;
    auto source_name = Nested::splitName(column_name).first;
    
    for (const auto & column : all_columns)
    {
        auto split = Nested::splitName(column.name);
        if (isArray(column.type) && split.first == source_name && !split.second.empty())
        {
            auto it = column_to_update_expression.find(column.name);
            if (it == column_to_update_expression.end())
                return {};
            res.push_back(it->second);
        }
    }
    return res;
}
ASTPtr MutationsInterpreter::prepare(bool dry_run)