**Describe the issue**

Improve feedback when trying to replace a partition with a different index

**Which ClickHouse server version to use**

21.9.5


**How to reproduce**

```
DROP DATABASE IF EXISTS test;

CREATE DATABASE test;

CREATE TABLE test.A (id UInt32, company UInt32, total UInt64) ENGINE=SummingMergeTree() PARTITION BY company PRIMARY KEY (id) ORDER BY (id, company);

INSERT INTO test.A SELECT number%10 as id, number%2 as company, count() as total FROM numbers(100) GROUP BY id,company;

CREATE TABLE test.B (id UInt32, company UInt32, total UInt64) ENGINE=SummingMergeTree() PARTITION BY company ORDER BY (id, company);

ALTER TABLE test.B REPLACE PARTITION '0' FROM test.A;

```

**Error message and/or stacktrace**

```
Received exception from server (version 21.9.5):
Code: 33. DB::Exception: Received from localhost:9000. DB::Exception: Cannot read all data. Bytes read: 0. Bytes expected: 4.. (CANNOT_READ_ALL_DATA)
(query: ALTER TABLE test.B REPLACE PARTITION '0' FROM test.A;)
````

**Expected behavior**

```
Code: 33. DB::Exception: Received from localhost:9000. DB::Exception: Cannot replace partition different index (CANNOT_REPLACE_PARTITION)
(query: ALTER TABLE test.B REPLACE PARTITION '0' FROM test.A;)
```

{
    return total_active_size_rows.load(std::memory_order_acquire);
}
size_t MergeTreeData::getPartsCount() const
{
    return total_active_size_parts.load(std::memory_order_acquire);
}
size_t MergeTreeData::getMaxPartsCountForPartitionWithState(DataPartState state) const
{
    auto lock = lockParts();
    size_t res = 0;
    size_t cur_count = 0;
    const String * cur_partition_id = nullptr;
    for (const auto & part : getDataPartsStateRange(state))
    {
        if (cur_partition_id && part->info.partition_id == *cur_partition_id)
        {
            ++cur_count;
        }
        else
        {
            cur_partition_id = &part->info.partition_id;
            cur_count = 1;
        }
        res = std::max(res, cur_count);
    }
    return res;
}
size_t MergeTreeData::getMaxPartsCountForPartition() const