Serialization of ThemeDisplay breaks when MDRRuleGroupInstance is a wrapped null instance

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.0 DXP SP2, Master
• Fix Version/s: 7.0.0 DXP FP9, 7.0.0 DXP SP2, 7.0.3 CE GA4, 7.1.X, Master
• Component/s: Portal Services, Portal Services > Mobile Device Rules
• Labels:
  • QA-CT
  • liferay-digital-enterprise-70-sp2
  • liferay-fixpack-de-9-7010
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Story Points: 1
• Fix Priority: 2
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/45353

If a device is recognized and no MDRRuleGroupInstance is retrieved by RuleGroupProcessorUtil.evaluateRuleGroups on MDRServicePreAction and we try to deeply serialize the ThemeDisplay, then a NullPointerException raises.