お問い合わせ確認ページのタイトル修正

## 概要(Overview)
#2095 が先祖返りしている

https://github.com/EC-CUBE/ec-cube/pull/2823/files?w=1#diff-2219c6e09a77c988d6c59dd7d365f8b2L105
https://github.com/EC-CUBE/ec-cube/pull/2823/files?w=1#diff-0b968c9ad7cb110a542ea76ad2ac48b8R78

## 期待する内容(Expect) or 要望 (Requirement)
- Eccube\Tests\Web\ContactControllerTest::testConfirm() が正常に通ること

## 再現手順(Procedure)
- Eccube\Tests\Web\ContactControllerTest::testConfirm() がエラーになる

### 環境 (environment)
+ EC-CUBE: experimental/sf branch

## 関連情報 (Ref)
#2823

Start with Eccube\Tests\Web\ContactControllerTest::testConfirm() and inspect the changed lines in pull request #2823, using the links in the issue to identify the title regression from #2095. Run the named test and confirm it passes with the expected contact confirmation page title restored.

Written by the indexing model from the issue text.