Fixing integration tests

Author: ymao1

server/src/main/java/org/elasticsearch/inference/InputType.java

@@ -44,8 +44,8 @@ public static InputType fromRestString(String name) {
         return inputType;
     }
 
-    public static boolean isInternalType(InputType inputType) {
-        return inputType == InputType.INTERNAL_INGEST || inputType == InputType.INTERNAL_SEARCH;
+    public static boolean isInternalTypeOrUnspecified(InputType inputType) {
+        return inputType == InputType.INTERNAL_INGEST || inputType == InputType.INTERNAL_SEARCH || inputType == InputType.UNSPECIFIED;
     }
 
     public static boolean isSpecified(InputType inputType) {

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/inference/action/InferenceAction.java

@@ -199,7 +199,9 @@ public ActionRequestValidationException validate() {
                 }
             }
 
-            if (taskType.equals(TaskType.TEXT_EMBEDDING) == false && (inputType != null && InputType.isInternalType(inputType) == false)) {
+            if (taskType.equals(TaskType.TEXT_EMBEDDING) == false
+                && taskType.equals(TaskType.ANY) == false
+                && (inputType != null && InputType.isInternalTypeOrUnspecified(inputType) == false)) {
                 var e = new ActionRequestValidationException();
                 e.addValidationError(format("Field [input_type] cannot be specified for task type [%s]", taskType));
                 return e;