fix(tests): fix DMN large payload test (#5629)

* fix(test): fix large decision input/output test

Since 8.3.0 Zeebe reacts differently on JSON passed to DMN instead of String. Fixing payload to be string in our test.

* chore(tests): fix payload file

qa/integration-tests/src/test/java/io/camunda/operate/zeebeimport/ZeebeImportIT.java

@@ -518,7 +518,6 @@ public void testPartitionIds() {
   }
 
   @Test
-  @Ignore("https://github.com/camunda/operate/pull/5524")
   public void testDecisionInstanceEvaluatedWithBigInputAndOutput() throws Exception {
     //given
     final String bpmnProcessId = "process";
@@ -529,8 +528,8 @@ public void testDecisionInstanceEvaluatedWithBigInputAndOutput() throws Exceptio
         .businessRuleTask(elementId, task -> task.zeebeCalledDecisionId(demoDecisionId2).zeebeResultVariable("result"))
         .done();
 
-    String bigJSONVariablePayload = payloadUtil.readStringFromClasspath("/large-payload.json");
-    String payload = "{\"value\": " + bigJSONVariablePayload + "}";
+    String bigJSONVariablePayload = payloadUtil.readStringFromClasspath("/large-payload.txt");
+    String payload = "{\"value\": \"" + bigJSONVariablePayload + "\"}";
     tester.deployProcess(instance, "test.bpmn").deployDecision("largeInputOutput.dmn").waitUntil().processIsDeployed()
         .and().decisionsAreDeployed(1)
         //when
@@ -544,9 +543,9 @@ public void testDecisionInstanceEvaluatedWithBigInputAndOutput() throws Exceptio
 
     assertThat(decisionEntities).hasSize(1);
     assertThat(decisionEntities.get(0).getEvaluatedInputs()).hasSize(1);
-    JSONAssert.assertEquals(decisionEntities.get(0).getEvaluatedInputs().get(0).getValue(), bigJSONVariablePayload, JSONCompareMode.LENIENT);
+    assertThat(decisionEntities.get(0).getEvaluatedInputs().get(0).getValue()).contains(bigJSONVariablePayload);
     assertThat(decisionEntities.get(0).getEvaluatedOutputs()).hasSize(1);
-    JSONAssert.assertEquals(decisionEntities.get(0).getEvaluatedOutputs().get(0).getValue(), bigJSONVariablePayload, JSONCompareMode.LENIENT);
+    assertThat(decisionEntities.get(0).getEvaluatedOutputs().get(0).getValue()).contains(bigJSONVariablePayload);
   }
 
   @Test