[OP-19546] Migrate lodash sortBy in module frontends

The linked-plugin frontends share the global `_` but were outside the
frontend/src sweep. Switches `sortBy` in the GitLab and GitHub modules to
the `lodash-es` named import (`_.flatten` here is handled in #23732).

modules/github_integration/frontend/module/tab-prs/tab-prs.component.ts

@@ -26,6 +26,7 @@
 // See COPYRIGHT and LICENSE files for more details.
 //++
 
+import { sortBy } from 'lodash-es';
 import { ChangeDetectionStrategy, Component, HostBinding, Input, OnInit, inject } from '@angular/core';
 import { WorkPackageResource } from 'core-app/features/hal/resources/work-package-resource';
 import { ApiV3Service } from 'core-app/core/apiv3/api-v3.service';
@@ -63,7 +64,7 @@ export class TabPrsComponent implements OnInit {
       .githubPullRequests
       .ofWorkPackage(this.workPackage)
       .pipe(
-        map((elements) => _.sortBy(elements, 'updatedAt')),
+        map((elements) => sortBy(elements, 'updatedAt')),
         shareReplay(1),
       );
   }

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

@@ -27,6 +27,7 @@
 // See docs/COPYRIGHT.rdoc for more details.
 //++
 
+import { sortBy } from 'lodash-es';
 import { WorkPackageResource } from "core-app/features/hal/resources/work-package-resource";
 import { HalResource } from "core-app/features/hal/resources/hal-resource";
 import { Injectable, inject } from '@angular/core';
@@ -45,6 +46,6 @@ export class WorkPackagesGitlabIssueService extends WorkPackageLinkedResourceCac
   }
 
   protected sortList(gitlabIssue:HalResource[], attr = 'createdAt'):HalResource[] {
-    return _.sortBy(_.flatten(gitlabIssue), attr);
+    return sortBy(_.flatten(gitlabIssue), attr);
   }
 }

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

@@ -27,6 +27,7 @@
 // See docs/COPYRIGHT.rdoc for more details.
 //++
 
+import { sortBy } from 'lodash-es';
 import { WorkPackageResource } from "core-app/features/hal/resources/work-package-resource";
 import { HalResource } from "core-app/features/hal/resources/hal-resource";
 import { Injectable, inject } from '@angular/core';
@@ -45,6 +46,6 @@ export class WorkPackagesGitlabMrsService extends WorkPackageLinkedResourceCache
   }
 
   protected sortList(mergeRequests:HalResource[], attr = 'createdAt'):HalResource[] {
-    return _.sortBy(_.flatten(mergeRequests), attr);
+    return sortBy(_.flatten(mergeRequests), attr);
   }
 }