[incubator-kie-issues-1131] test migration from V7 to code generation-28

[Abhitocode]

Below are the tests with issues, commented the same for each test.

1. CompensationTest

• compensationInSubSubProcesses
  It appears there are a few nodes that are missing outbound or inbound connections. The BPMN editor didn't indicate any problems, but it turns out that these nodes have no connection to the start node.

error:
java.lang.IllegalStateException: Process could not be validated ![Process 'Default Process' [InSubSubProcess]: Node 'Boundary Compensate 3' [_X-1] Event has no outgoing connection
Process 'Default Process' [InSubSubProcess]: Node 'Compensate Handler 3' [_X-2] Action has no incoming connection.,
Process 'Default Process' [InSubSubProcess]: Node 'Boundary Compensate 2' [_Y-1] Event has no outgoing connection,
Process 'Default Process' [InSubSubProcess]: Node 'Compensate Handler 2' [_Y-2] Action has no incoming connection.,
Process 'Default Process' [InSubSubProcess]: Node 'Compensate Handler 3' [_X-2] Has no connection to the start node.,
Process 'Default Process' [InSubSubProcess]: Node 'Compensate Handler 2' [_Y-2] Has no connection to the start node.]*

2. DataTest

• testDataStore and testAssociation
  When compiling the code, we cannot resolve method 'metaData' in 'Process'.
  As I understand, the metaData() method is protected, and thus, it isn't directly accessible in the test class.
  How to get process metadata from the process object(only then we can get the definition metadata).

• testDefaultProcessVariableValue
  CorrelationKeyModel does not have methods named getProcVar and getIntVar .
  This may be due to acutal variables/methods being different in the CorrelationKeyModel.

guidance on above would be helpful.

Closes apache/incubator-kie-issues#1131.

Note: This pr contains tests with error, only for review purpose.

[elguardian]

you need to declare both process

        Application app = ProcessTestHelper.newApplication();
        ProcessTestHelper.registerProcessEventListener(app, new DefaultKogitoProcessEventListener() {
            @Override
            public void afterProcessCompleted(ProcessCompletedEvent event) {
                if ("ErrorsBetweenSubProcess".equals(event.getProcessInstance().getProcessId())) {
                    assertThat(event.getProcessInstance().getState()).isEqualTo(ProcessInstance.STATE_ABORTED);
                }
            }
        });
        ErrorsBetweenSubProcessProcess.newProcess(app);
        org.kie.kogito.process.Process<ErrorsBetweenProcessModel> process = ErrorsBetweenProcessProcess.newProcess(app);
        ErrorsBetweenProcessModel model = process.createModel();
        model.setTipoEvento("error");
        model.setPasoVariable(3);
        ProcessInstance<ErrorsBetweenProcessModel> processInstance = process.createInstance(model);
        processInstance.start();
        assertThat(processInstance.status()).isEqualTo(ProcessInstance.STATE_COMPLETED);

        Assertions.assertEquals("error desde Subproceso", processInstance.variables().getEvent());

[Abhitocode]

Migrated as above and created a separate pr for the same #3665. Thank you @elguardian : )

[elguardian]

please fix