Added changelog and danger fixes

changelogs/unreleased/19745-forms-with-task-lists-can-be-overwritten-when-editing-simultaneously.yml

+---
+title: Increase reliability and performance of clicking task items
+merge_request: 23938
+author:
+type: fixed

spec/services/issues/update_service_spec.rb

@@ -552,7 +552,7 @@ describe Issues::UpdateService, :mailer do
 
       context 'when a task is marked as completed' do
         before do
-          update_issue(update_task: { index: 1, checked: true, line_source: '- [ ] Task 1', line_number: 1})
+          update_issue(update_task: { index: 1, checked: true, line_source: '- [ ] Task 1', line_number: 1 })
         end
 
         it 'creates system note about task status change' do
@@ -568,7 +568,7 @@ describe Issues::UpdateService, :mailer do
       context 'when a task is marked as incomplete' do
         before do
           update_issue(description: "- [x] Task 1\n- [X] Task 2")
-          update_issue(update_task: { index: 2, checked: false, line_source: '- [X] Task 2', line_number: 2})
+          update_issue(update_task: { index: 2, checked: false, line_source: '- [X] Task 2', line_number: 2 })
         end
 
         it 'creates system note about task status change' do
@@ -589,7 +589,7 @@ describe Issues::UpdateService, :mailer do
         it 'raises an exception' do
           expect(Note.count).to eq(2)
           expect do
-            update_issue(update_task: { index: 2, checked: true, line_source: '- [ ] Task 2', line_number: 2})
+            update_issue(update_task: { index: 2, checked: true, line_source: '- [ ] Task 2', line_number: 2 })
           end.to raise_error(ActiveRecord::StaleObjectError)
           expect(Note.count).to eq(2)
         end
@@ -599,7 +599,7 @@ describe Issues::UpdateService, :mailer do
         before do
           update_issue(description: "Paragraph\n\n- [ ] Task 1\n- [x] Task 2")
           update_issue(description: "Paragraph with more words\n\n- [ ] Task 1\n- [x] Task 2")
-          update_issue(update_task: { index: 2, checked: false, line_source: '- [x] Task 2', line_number: 4})
+          update_issue(update_task: { index: 2, checked: false, line_source: '- [x] Task 2', line_number: 4 })
         end
 
         it 'creates system note about task status change' do

spec/services/task_list_toggle_service_spec.rb

+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe TaskListToggleService do