Calendar's repeatable event date does not show in the proper Japanese format

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.0 DXP SP8, 7.0.X, 7.1.0 CE GA1, 7.1.X, Master
• Fix Version/s: 7.1.10 DXP FP3, 7.1.1 CE GA2, 7.1.10.1 SP1, 7.1.X, Master
• Component/s: Calendar
• Labels:
  • QA-V
  • STAB_TST_JA
  • STAB_TST_JA_MUST
  • liferay-dxp-71-sp1
  • liferay-fixpack-dxp-3-7110
• Branch Version/s:
  7.1.x
• Backported to Branch:
  Committed
• Story Points: 1
• Fix Priority: 3
• Sprint: F&W Sprint 5, F&W Sprint 6
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/63484

Issue
Date does not show in the proper Japanese format

Steps to reproduce

1. Start up Liferay
2. Sign in as [e-mail]
3. Add Calendar portlet to page
4. Change localization to Japanese by appending /ja/ to the URL after the hostname:port combination
5. Click on any date to add an appointment
6. Press Edit (編集)
7. Check the box for Repeat (繰り返し) and a modal will pop up with the repeat options
8. Click on On (On)
9. Note the date format displayed below and in the popup title

Actual Results
8月,7,2018まで毎日

Expected Results
2018年8月7日まで毎日

Reproduced in
7.1.x (da8b8b290689354a892ea7ab0009df232bd53397)