Avoid initializing user related variables for template twice

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.0.0 DXP SP2, 7.0.0 DXP FP13, 7.0.0 DXP SP3, 7.0.3 CE GA4, 7.1.X, Master
• Component/s: Liferay Themes, Performance
• Labels:
  • liferay-digital-enterprise-70-sp3
  • liferay-fixpack-de-13-7010
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Story Points: 1
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/47225

Currently we have two places to initialize user related variables for template engine, one is in init.ftl/init.vm, another is in UsersTemplateContextContributor.

We did this because themes developed against GA2 may throw errors when deployed in GA1, see more details here https://issues.liferay.com/browse/LPS-66428.

To avoid same variable initialized twice, we set a falg once the variables are initialized and check the flag in init.ftl/init.vm.

This issue can not be tested manually.