[Rest Api Compatibility] REST Terms vector typed response

enabeling the tests and adds a type field for termvector response
the commit that enabled typed enpoints but missed to update the response
elastic#72155

rest-api-spec/build.gradle

@@ -119,7 +119,9 @@ tasks.named("yamlRestCompatTest").configure {
     // there is a small distinction between empty mappings and no mappings at all. The code to implement this test was refactored #54003
     // field search on _type field- not implementing. The data for _type is considered incorrect in this search
     'search/160_exists_query/Test exists query on _type field',
-    // 83 - 12 = 71 tests won't be fixed
+    //type information is not stored, hence the the index will be found
+   'termvectors/50_mix_typeless_typeful/Term vectors with typeless API on an index that has types',
+    // 85 - 13 = 72 tests won't be fixed
     'bulk/11_basic_with_types/Array of objects',
     'bulk/11_basic_with_types/Empty _id',
     'bulk/11_basic_with_types/Empty _id with op_type create',
@@ -219,11 +221,6 @@ tasks.named("yamlRestCompatTest").configure {
     'snapshot.get/10_basic/Get snapshot info with metadata',
     'snapshot.get/10_basic/Get snapshot info with index details',
     'suggest/20_completion/Suggestions with source should work',
-    'termvectors/11_basic_with_types/Basic tests for termvector get',
-    'termvectors/20_issue7121/Term vector API should return \'found: false\' for docs between index and refresh',
-    'termvectors/21_issue7121_with_types/Term vector API should return \'found: false\' for docs between index and refresh',
-    'termvectors/31_realtime_with_types/Realtime Term Vectors',
-    'termvectors/50_mix_typeless_typeful/Term vectors with typeless API on an index that has types'
   ].join(',')
 }
 

server/src/main/java/org/elasticsearch/action/termvectors/TermVectorsResponse.java

@@ -19,6 +19,7 @@
 import org.elasticsearch.Version;
 import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.action.termvectors.TermVectorsRequest.Flag;
+import org.elasticsearch.common.RestApiVersion;
 import org.elasticsearch.common.bytes.BytesArray;
 import org.elasticsearch.common.bytes.BytesReference;
 import org.elasticsearch.common.io.stream.BytesStreamOutput;
@@ -170,6 +171,9 @@ public XContentBuilder toXContent(XContentBuilder builder, Params params) throws
         if (isArtificial() == false) {
             builder.field(FieldStrings._ID, id);
         }
+        if(builder.getRestApiVersion() == RestApiVersion.V_7) {
+            builder.field(MapperService.TYPE_FIELD_NAME, MapperService.SINGLE_MAPPING_NAME);
+        }
         builder.field(FieldStrings._VERSION, docVersion);
         builder.field(FieldStrings.FOUND, isExists());
         builder.field(FieldStrings.TOOK, tookInMillis);