Making a navigation system 'strictly static' affects all subsequently created navigation system instances

The problem is a result of two things:

• UNavigationSystemV1::bStaticRuntimeNavigation being static
• UNavigationSystemModuleConfig::UpdateWithNavSysCDO copying the data from nav sys CDO, including bStaticRuntimeNavigation.

Sounds like the problem can be solved by just not copying bStaticRuntimeNavigation

1. Launch the editor for any project
2. In any map WorldSettings.NavigationSystemConfig enable the StrictlyStatic option (if NavigationSystemConfig instance is missing just pick NavigationSystemModuleConfig)
3. Open another map, no saving

Result: Freshly opened map's WorldSettings.NavigationSystemConfig.StrictlyStatic is already set to true
Expected: every map's WorldSettings.NavigationSystemConfig.StrictlyStatic is independent