**Describe the situation**
multiIf works 10 times slower than If with single condition.

**How to reproduce**
ClickHouse version 21.10

```

SELECT count()
FROM numbers_mt(1000000000)
WHERE NOT ignore(multiIf(number = 0, NULL, toNullable(number)))

┌────count()─┐
│ 1000000000 │
└────────────┘

1 rows in set. Elapsed: 10.267 sec. Processed 1.00 billion rows, 8.00 GB (97.41 million rows/s., 779.25 MB/s.)

SELECT count()
FROM numbers_mt(1000000000)
WHERE NOT ignore(If(number = 0, NULL, toNullable(number)))

┌────count()─┐
│ 1000000000 │
└────────────┘

1 rows in set. Elapsed: 1.010 sec. Processed 1.00 billion rows, 8.00 GB (990.63 million rows/s., 7.93 GB/s.)
```

**Expected performance**
The same performance for multiIf and if.

#include <Parsers/ASTOrderByElement.h>
#include <Parsers/ASTSelectQuery.h>
#include <Parsers/ASTSubquery.h>
#include <Parsers/ASTSelectWithUnionQuery.h>
#include <Parsers/ASTTablesInSelectQuery.h>
#include <Functions/FunctionFactory.h>
#include <Storages/IStorage.h>
#include <Interpreters/RewriteSumIfFunctionVisitor.h>
namespace DB
{
namespace ErrorCodes
{
    extern const int LOGICAL_ERROR;
    extern const int UNKNOWN_TYPE_OF_AST_NODE;
}
namespace
{
const std::unordered_set<String> possibly_injective_function_names
{
        "dictGet",
        "dictGetString",
        "dictGetUInt8",
        "dictGetUInt16",
        "dictGetUInt32",
        "dictGetUInt64",
        "dictGetInt8",
        "dictGetInt16",
        "dictGetInt32",
        "dictGetInt64",
        "dictGetFloat32",