ClickHouse v.21.7.7.47

setting max_memory_usage doesnt work for 'create table .. as' queries

for example:
**this query works**
`create table test_table engine MergeTree order by a as
select a_table.a, b_table.b_arr
from (select arrayJoin(range(10000)) as a) a_table
         cross join (select range(10000) as b_arr) b_table
    settings max_memory_usage = 1;`

**this query doesnt work**
`insert into test_table
select a_table.a, b_table.b_arr
from (select arrayJoin(range(10000)) as a) a_table
         cross join (select range(10000) as b_arr) b_table
    settings max_memory_usage = 1;`
With error:
`DB::Exception: Memory limit (for query) exceeded: would use 4.09 MiB`

**Expected behavior**
**this query should NOT work, and setting max_memory_usage should work for all 'select'\'insert'\'create table' queries**
`create table test_table engine MergeTree order by a as
select a_table.a, b_table.b_arr
from (select arrayJoin(range(10000)) as a) a_table
         cross join (select range(10000) as b_arr) b_table
    settings max_memory_usage = 1;`
{
    if (auto * ast_insert_into = dynamic_cast<ASTInsertQuery *>(ast.get()))
    {
        if (ast_insert_into->watch)
            context->setSetting("output_format_enable_streaming", 1);
    }
}
static std::tuple<ASTPtr, BlockIO> executeQueryImpl(
    const char * begin,
    const char * end,
    ContextMutablePtr context,
    bool internal,
    QueryProcessingStage::Enum stage,
    bool has_query_tail,
    ReadBuffer * istr)
{
    const auto current_time = std::chrono::system_clock::now();
    auto & client_info = context->getClientInfo();