Make ipv4_num_to_string function accepts int32

```sql mysql> select ipv4_num_to_string(3232235521::uint32); +------------------------------------------------------------------+ | ipv4_num_to_string(arrow_cast(Int64(3232235521),Utf8("UInt32"))) | +------------------------------------------------------------------+ | 192.168.0.1 | +------------------------------------------------------------------+ 1 row in set (0.01 sec) mysql> select ipv4_num_to_string(3232235521); ERROR 1815 (HY000): (PlanQuery): Failed to plan SQL: Error during planning: Failed to coerce arguments for 'ipv4_num_to_string': cannot coerce Int64 to Exact([UInt32]). No matching function for 'ipv4_num_to_string(Int64)'. You may need an explicit cast. Candidate functions: ipv4_num_to_string(UInt32) ``` We could update the `ipv4_num_to_string` signature to accept `Int32` and automatically coerce the input type. https://github.com/GreptimeTeam/greptimedb/blob/8a3bd374a89a74fc2dff9ef24d55a71b30c4e1f0/src/common/function/src/scalars/ip/ipv4.rs#L47