Data loss when '"json_populate_recorset" with long column name

If we create a column name longer than 64 bytes, it will be truncated in PostgreSQL to max (NAMEDATALEN) length. 

For example: "VeryLongNameVeryLongNameVeryLongNameVeryLongNameVeryLongNameVeryLongName" will be truncated in database to "VeryLongNameVeryLongNameVeryLongNameVeryLongNameVeryLongNameVer"

But in the codebase we could work with full column name - SQL functions like INSERT/UPDATE work with long names without problem, automatically searches for suitable column (thank you for it).

But if we try to update it with "json_populate_recordset" using full name, it will not just ignore column with long name - data in that record will be nulled.

How to reproduce:

1. create table wow("VeryLongNameVeryLongNameVeryLongNameVeryLongNameVeryLongNameVeryLongName" text);