MM-11713: Does not require edit_own_posts to edit_others_posts. (#14787)

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

api4/post_test.go

@@ -938,6 +938,21 @@ func TestPatchPost(t *testing.T) {
 		_, resp := th.SystemAdminClient.PatchPost(post.Id, patch)
 		CheckNoError(t, resp)
 	})
+
+	t.Run("edit others posts permission can function independently of edit own post", func(t *testing.T) {
+		th.LoginBasic2()
+		patch := &model.PostPatch{}
+		_, resp := Client.PatchPost(post.Id, patch)
+		CheckForbiddenStatus(t, resp)
+
+		// Add permission to edit others'
+		defer th.RestoreDefaultRolePermissions(th.SaveDefaultRolePermissions())
+		th.RemovePermissionFromRole(model.PERMISSION_EDIT_POST.Id, model.CHANNEL_USER_ROLE_ID)
+		th.AddPermissionToRole(model.PERMISSION_EDIT_OTHERS_POSTS.Id, model.CHANNEL_USER_ROLE_ID)
+
+		_, resp = Client.PatchPost(post.Id, patch)
+		CheckNoError(t, resp)
+	})
 }
 
 func TestPinPost(t *testing.T) {