first step (#15687)

TODO : 

-> for test integreation for this connect ✅
-> add validation in common API

Fixes https://github.com/twentyhq/core-team-issues/issues/1278

packages/twenty-server/src/engine/api/graphql/workspace-schema-builder/graphql-type-generators/input-types/relation-field-metadata-gql-type.generator.ts

@@ -180,11 +180,7 @@ export class RelationFieldMetadataGqlInputTypeGenerator {
     >;
     typeOptions: TypeOptions;
   }) {
-    if (
-      fieldMetadata.settings?.relationType === RelationType.ONE_TO_MANY ||
-      //TODO : Enable connect on morph relation - @guillim
-      fieldMetadata.type === FieldMetadataType.MORPH_RELATION
-    ) {
+    if (fieldMetadata.settings?.relationType === RelationType.ONE_TO_MANY) {
       return {};
     }