Before Xray 7.3.0, when importing an Xray Json with examples status the examples table was created, with 7.3.0 when a Test has iterations this is not happening

Steps to reproduce:

• Create a Test Cucumber

Given I have entered <input_1> into the calculator
And I have entered <input_2> into the calculator
When I press <button>
Then the result should be <output> on the screen

 Examples:
 | input_1 | input_2 | button | output |
 | 20 | 30 | add | 50 |
 | 2 | 5 | add | 7 |

• Make sure to have Xray 7.2.x installed; import the result file using Xray Json import or directly through the test run page "Import Execution Results" button

  curl -H "Content-Type: application/json" -X POST -u admin:admin --data @test_import.json http://localhost:9011/rest/raven/1.0/import/execution
  

• Make sure to have Xray 7.3.0 installed and repeat the previous import
• compare Xray 7.2.0 with 7.3.0
  

Another fixes:

• After importing the results and changing the dataset, the reset/merge message is not appearing, now appears
• When deleting a project and we've a scheme in the database a null pointer appears