**Describe the bug**
Here's my table:
```sql
CREATE TABLE table2
(
        EventDate Date,
        Id Int32,
        Value Int32
)
Engine = MergeTree()
PARTITION BY toYYYYMM(EventDate)
ORDER BY Id;
```

Modify default value (intentionally wrong):
```
>>> alter table table2 modify column Value default 'some_string';

ALTER TABLE table2
    MODIFY COLUMN `Value` DEFAULT 'some_string'

Ok.

0 rows in set. Elapsed: 0.007 sec. 
```

Now you obviously cannot insert anything to this table, because:
```
>>> insert into table2 (EventDate, Id) values (1234567890, 2)

INSERT INTO table2 (EventDate, Id) VALUES

Received exception from server (version 20.9.3):
Code: 6. DB::Exception: Received from localhost:9000. DB::Exception: Cannot parse string 'some_string' as Int32: syntax error at begin of string. Note: there are toInt32OrZero and toInt32OrNull functions, which returns zero/NULL instead of throwing exception.. 

1 rows in set. Elapsed: 0.002 sec. 
```

**How to reproduce**
* Which ClickHouse server version to use: 20.9.3
* Which interface to use, if matters: I used standard CLI

**Expected behavior**
Currently ClickHouse doesn't check types compability while setting a DEFAULT value for a column. Maybe ClickHouse should validate DEFAULT values for type compability?

if (command.to_remove == AlterCommand::RemoveProperty::DEFAULT && column_default->kind != ColumnDefaultKind::Default)
                {
                    throw Exception(
                        ErrorCodes::BAD_ARGUMENTS,
                        "Cannot remove DEFAULT from column {}, because column default type is {}. Use REMOVE {} to delete it",
                            backQuote(column_name), toString(column_default->kind), toString(column_default->kind));
                }
                if (command.to_remove == AlterCommand::RemoveProperty::MATERIALIZED && column_default->kind != ColumnDefaultKind::Materialized)
                {
                    throw Exception(
                        ErrorCodes::BAD_ARGUMENTS,
                        "Cannot remove MATERIALIZED from column {}, because column default type is {}. Use REMOVE {} to delete it",
                        backQuote(column_name), toString(column_default->kind), toString(column_default->kind));
                }
                if (command.to_remove == AlterCommand::RemoveProperty::ALIAS && column_default->kind != ColumnDefaultKind::Alias)
                {
                    throw Exception(
                        ErrorCodes::BAD_ARGUMENTS,
                        "Cannot remove ALIAS from column {}, because column default type is {}. Use REMOVE {} to delete it",
                        backQuote(column_name), toString(column_default->kind), toString(column_default->kind));
                }
            }
            if (command.isRemovingProperty())
            {
                if (!column_default && command.to_remove == AlterCommand::RemoveProperty::DEFAULT)
                    throw Exception(
                        ErrorCodes::BAD_ARGUMENTS,
                        "Column {} doesn't have DEFAULT, cannot remove it",
                        backQuote(column_name));
                if (!column_default && command.to_remove == AlterCommand::RemoveProperty::ALIAS)