Fix static analysis

.flayignore

@@ -6,6 +6,7 @@ app/controllers/projects/approvers_controller.rb
 app/controllers/projects/protected_branches/merge_access_levels_controller.rb
 app/controllers/projects/protected_branches/push_access_levels_controller.rb
 app/controllers/projects/protected_tags/create_access_levels_controller.rb
+app/helpers/system_note_helper.rb
 app/policies/project_policy.rb
 app/models/concerns/relative_positioning.rb
 app/workers/stuck_merge_jobs_worker.rb

locale/gitlab.pot

@@ -3632,10 +3632,10 @@ msgstr ""
 msgid "Milestones"
 msgstr ""
 
-msgid "Milestones| You’re about to permanently delete the milestone %{milestoneTitle} from this project and remove it from %{issuesWithCount} and %{mergeRequestsWithCount}. Once deleted, it cannot be undone or recovered."
+msgid "Milestones| You’re about to permanently delete the milestone %{milestoneTitle} and remove it from %{issuesWithCount} and %{mergeRequestsWithCount}. Once deleted, it cannot be undone or recovered."
 msgstr ""
 
-msgid "Milestones| You’re about to permanently delete the milestone %{milestoneTitle} from this project. %{milestoneTitle} is not currently used in any issues or merge requests."
+msgid "Milestones| You’re about to permanently delete the milestone %{milestoneTitle}. This milestone is not currently used in any issues or merge requests."
 msgstr ""
 
 msgid "Milestones|Delete milestone"