[FIX] Error when importing customers #3659

Since ir_fields is written with the new API, when importing a partner record with country/state name (not id), it will call the 'name_search' function with the new arguments, which ommit cr, uid, ids, context.

Fixes #3659
recordsets are functionally immutable, you should *never* alter their content in the new API, only create new recordsets from them.

What you should do here is call `name_get` on `ids`.