Implemented Native confirm component instead of JavaScript confirm instance

[PR4NJ41]

What this PR does

• Implemented native confirm components instead of JavaScript confirm instances for assignments deletion.
• resolves Replace all javascript confirm and alert instances with Confirm and Notification components #1038

Screenshots

Before:

After:

[PR4NJ41]

@ragesoss This PR is ready for Review. Please review it. Thank You!

[ragesoss]

Thanks! Does this feature get exercised in the test suite?

[PR4NJ41]

@ragesoss Yes,a test is present in rspec. You can see the rspec here:

WikiEduDashboard/spec/features/course_page_spec.rb

Lines 347 to 373 in ecc77bb

	it 'allows instructor to remove an available article' do
	pending 'This sometimes fails for unknown reasons.'
	stub_info_query
	stub_raw_action
	Assignment.destroy_all
	login_as(admin)
	stub_oauth_edit
	course = Course.first
	wiki = Wiki.first
	AssignmentManager.new(user_id: nil,
	course:,
	wiki:,
	title: 'Education',
	role: 0).create_assignment
	js_visit "/courses/#{slug}/articles/available"
	assigned_articles_section = page.find(:css, '#available-articles', match: :first)
	expect(assigned_articles_section).to have_content 'Education'
	expect(Assignment.count).to eq(1)
	expect(assigned_articles_section).to have_content 'Remove'
	accept_alert do
	click_button 'Remove'
	end
	expect(assigned_articles_section).not_to have_content 'Education'
	pass_pending_spec
	end

[ragesoss]

You should change that spec and make sure it passes locally.

[PR4NJ41]

@ragesoss I think it passes for the changes I made. But some other checks are failing (flaky)

On Master:

After:

[PR4NJ41]

@ragesoss This PR is ready for Review. Please review it. Thank You!