(you don't have to strictly follow this form)

**Describe the bug**
When using `ORDER BY column_name COLLATE 'en'`, `COLLATE` is ignored if `column_name` is the primary key
 
**How to reproduce**
* version 21.1.2
* `CREATE TABLE` statements for all tables involved:
```
CREATE TABLE test.test_collation
(
    `v` String,
    `v2` String
)
ENGINE = MergeTree
ORDER BY v
SETTINGS index_granularity = 8192
```
* Sample data:
```
insert into test.test_collation values ('A', 'A')
insert into test.test_collation values ('B', 'B')
insert into test.test_collation values ('C', 'C')
insert into test.test_collation values ('a', 'a')
insert into test.test_collation values ('b', 'b')
insert into test.test_collation values ('c', 'c')
```
* Queries to run that lead to unexpected result
Primary key
```
SELECT *
FROM test.test_collation
ORDER BY v ASC COLLATE 'en'

Query id: fa84ae7a-abe7-4886-99cd-eba7ad5d5fc4

┌─v─┬─v2─┐
│ A │ A  │
│ B │ B  │
│ C │ C  │
│ a │ a  │
│ b │ b  │
│ c │ c  │
└───┴────┘
```
Separate column
```
SELECT *
FROM test.test_collation
ORDER BY v2 ASC COLLATE 'en'

Query id: 04401f85-3cb2-442c-8c89-e3328d1615cd

┌─v─┬─v2─┐
│ a │ a  │
│ A │ A  │
│ b │ b  │
│ B │ B  │
│ c │ c  │
│ C │ C  │
└───┴────┘
```

**Expected behavior**
Both of these queries to return the rows in the same order

added_columns.emplace(column.name);
                }
            }
            for (auto & column : columns_after_array_join)
                if (added_columns.count(column.name) == 0)
                    new_columns_after_array_join.emplace_back(column.name, column.type);
            columns_after_array_join.swap(new_columns_after_array_join);
        }
        columns_after_array_join.insert(columns_after_array_join.end(), array_join_columns.begin(), array_join_columns.end());
        const ASTTablesInSelectQueryElement * join = select_query->join();
        if (join)
        {
            getRootActionsNoMakeSet(analyzedJoin().leftKeysList(), true, temp_actions, false);
            auto sample_columns = temp_actions->getResultColumns();
            analyzedJoin().addJoinedColumnsAndCorrectTypes(sample_columns);
            temp_actions = std::make_shared<ActionsDAG>(sample_columns);
        }
        columns_after_join = columns_after_array_join;
        analyzedJoin().addJoinedColumnsAndCorrectTypes(columns_after_join, false);
    }
    has_aggregation = makeAggregateDescriptions(temp_actions);
    if (select_query && (select_query->groupBy() || select_query->having()))
        has_aggregation = true;
    if (has_aggregation)
    {
        
        if (select_query)
        {
            if (select_query->groupBy())
            {