[OP-19544] Replace lodash set/dedup in module frontends

The linked-plugin frontends share the global `_` but were outside the
frontend/src sweep. Converts `without`/`flatten` in the GitLab module to
the same native forms.

Author: myabc

modules/gitlab_integration/frontend/module/hal/resources/gitlab-issue-resource.ts

@@ -38,6 +38,6 @@ export class GitlabIssueResource extends HalResource {
    * Exclude the schema _link from the linkable Resources.
    */
   public $linkableKeys():string[] {
-    return _.without(super.$linkableKeys(), 'schema');
+    return super.$linkableKeys().filter((key) => key !== 'schema');
   }
 }

modules/gitlab_integration/frontend/module/hal/resources/gitlab-merge-request-resource.ts

@@ -38,6 +38,6 @@ export class GitlabMergeRequestResource extends HalResource {
    * Exclude the schema _link from the linkable Resources.
    */
   public $linkableKeys():string[] {
-    return _.without(super.$linkableKeys(), 'schema');
+    return super.$linkableKeys().filter((key) => key !== 'schema');
   }
 }

modules/gitlab_integration/frontend/module/hal/resources/gitlab-user-resource.ts

@@ -38,6 +38,6 @@ export class GitlabUserResource extends HalResource {
    * Exclude the schema _link from the linkable Resources.
    */
   public $linkableKeys():string[] {
-    return _.without(super.$linkableKeys(), 'schema');
+    return super.$linkableKeys().filter((key) => key !== 'schema');
   }
 }

modules/gitlab_integration/frontend/module/tab-issue/wp-gitlab-issue.service.ts

@@ -46,6 +46,6 @@ export class WorkPackagesGitlabIssueService extends WorkPackageLinkedResourceCac
   }
 
   protected sortList(gitlabIssue:HalResource[], attr = 'createdAt'):HalResource[] {
-    return sortBy(_.flatten(gitlabIssue), attr);
+    return sortBy(gitlabIssue.flat(), attr);
   }
 }

modules/gitlab_integration/frontend/module/tab-mrs/wp-gitlab-mrs.service.ts

@@ -46,6 +46,6 @@ export class WorkPackagesGitlabMrsService extends WorkPackageLinkedResourceCache
   }
 
   protected sortList(mergeRequests:HalResource[], attr = 'createdAt'):HalResource[] {
-    return sortBy(_.flatten(mergeRequests), attr);
+    return sortBy(mergeRequests.flat(), attr);
   }
 }