In Test Case Importer imports Tests even if the Test Action field is empty.

Description
Test Case Importer imports Tests even if the Test Action has empty data. Additionally, the Test Step action field is filled with undefined word.

Pre-conditions

How to reproduce

1. Import the Tests without mentioning any data in the Action column.

Actual result/Attachments
Tests are getting Imported without Action, Data, and Expected Result.

Expected result

Test Case Importer should throw an error if the Test Action has no data.

"errors": [
                {
                    "xray": "Step 1 is missing following required fields: action."