[Internal] Fixed SqlIT integration tests (#326)

## Changes
<!-- Summary of your changes that are easy to understand -->
Queries return null, we need to add a check to iterate if non null. 

Note: Ideally the test should create the query history and then fetch
those followed by verifying if it's the same data to properly check for
E2E lifecycle.

But for just listing, the requests work (although get null response) and
more tests should be added for checking create etc...

## Tests
<!-- How is this tested? -->
Ran Integration test locally.

Author: tanmay-db

databricks-sdk-java/src/test/java/com/databricks/sdk/integration/QueriesIT.java

@@ -4,10 +4,8 @@
 import com.databricks.sdk.integration.framework.CollectionUtils;
 import com.databricks.sdk.integration.framework.EnvContext;
 import com.databricks.sdk.integration.framework.EnvTest;
-import com.databricks.sdk.service.sql.ListQueriesRequest;
-import com.databricks.sdk.service.sql.ListQueryObjectsResponseQuery;
-import java.util.ArrayList;
-import java.util.Iterator;
+import com.databricks.sdk.service.sql.LegacyQuery;
+import com.databricks.sdk.service.sql.ListQueriesLegacyRequest;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
 
@@ -16,12 +14,9 @@
 class QueriesIT {
   @Test
   void listsQueries(WorkspaceClient w) {
-    Iterator<ListQueryObjectsResponseQuery> list =
-        w.queries().list(new ListQueriesRequest().setPageSize(1000L)).iterator();
-
-    java.util.List<ListQueryObjectsResponseQuery> all = new ArrayList<>();
-    list.forEachRemaining(all::add);
-
+    Iterable<LegacyQuery> list =
+        w.queriesLegacy().list(new ListQueriesLegacyRequest().setPageSize(1000L));
+    java.util.List<LegacyQuery> all = CollectionUtils.asList(list);
     CollectionUtils.assertUnique(all);
   }
 }

databricks-sdk-java/src/test/java/com/databricks/sdk/integration/SqlIT.java

@@ -22,8 +22,10 @@ void listQueryHistoryTimeRange(WorkspaceClient w) {
         new ListQueryHistoryRequest()
             .setFilterBy(new QueryFilter().setQueryStartTimeRange(timeRange));
     Iterable<QueryInfo> queries = w.queryHistory().list(request).getRes();
-    for (QueryInfo query : queries) {
-      System.out.println(query);
+    if (queries != null) {
+      for (QueryInfo query : queries) {
+        System.out.println(query);
+      }
     }
   }
 
@@ -33,8 +35,10 @@ void listQueryHistoryUserIds(WorkspaceClient w) {
         new ListQueryHistoryRequest()
             .setFilterBy(new QueryFilter().setUserIds(Arrays.asList(123L, 456L)));
     Iterable<QueryInfo> queries = w.queryHistory().list(request).getRes();
-    for (QueryInfo query : queries) {
-      System.out.println(query);
+    if (queries != null) {
+      for (QueryInfo query : queries) {
+        System.out.println(query);
+      }
     }
   }
 }