SAT: correct the record validation check according to the scheme (as an option: add validation that type is not null)

[yevhenii-ldv]

Tell us about the problem you're trying to solve

Currently, there is a problem that if the stream scheme does not coincide at all with the response, then the validation in SAT tests is successful.

For example, there was a case with the Squaré connector, when initially the scheme was indicated incorrectly and was indicated for the general response from the API, and not for a single record, however, the SAT tests did not catch this moment and did not indicate an error.

An example of the schema here.

Describe the solution you’d like

SAT catches such cases at the moment of testing, and not the reviewer sees it at the moment of code review.