- Add AdditionalRestrictedFolders to FDataDrivenPlatformInfoRegistry
- Fixed FPluginManager::ReadAllPlugins() to scan AdditionalRestrictedFolders to find related platform directory for plugin
- Fixed FPluginManager::CreatePluginObject() complaining about existing plugin found twice (ignore if same source path)
- Fixed Plugins::TryMergeWithParent() handling for blacklist merge with child - if parent had blacklist but child didn't, child was incorrectly added to blacklist
#jira UE-82655
#rb josh.adams
#rnx
#ROBOMERGE-SOURCE: CL 9894962 in //UE4/Release-4.24/...
#ROBOMERGE-BOT: RELEASE (Release-4.24 -> Main) (v558-9892490)
[CL 9894965 by jeff newquist in Main branch]