Fix path comparison in Loader
Fix path comparison in Loader

These two path expressions evaluate to the same physical directory, differing only by the trailing separator char:
- new FileInfo(assemblyPath).DirectoryName
- AppDomain.CurrentDomain.BaseDirectory

Jay-Jay-D/LeanSTP,kaffeebrauer/Lean,AnshulYADAV007/Lean,AnshulYADAV007/Lean,AlexCatarino/Lean,redmeros/Lean,AnshulYADAV007/Lean,Mendelone/forex_trading,young-zhang/Lean,andrewhart098/Lean,young-zhang/Lean,AlexCatarino/Lean,AlexCatarino/Lean,AnshulYADAV007/Lean,young-zhang/Lean,Jay-Jay-D/LeanSTP,JKarathiya/Lean,JKarathiya/Lean,jameschch/Lean,StefanoRaggi/Lean,QuantConnect/Lean,StefanoRaggi/Lean,JKarathiya/Lean,Jay-Jay-D/LeanSTP,QuantConnect/Lean,redmeros/Lean,Mendelone/forex_trading,QuantConnect/Lean,JKarathiya/Lean,kaffeebrauer/Lean,Mendelone/forex_trading,jameschch/Lean,Jay-Jay-D/LeanSTP,jameschch/Lean,jameschch/Lean,andrewhart098/Lean,AlexCatarino/Lean,young-zhang/Lean,jameschch/Lean,StefanoRaggi/Lean,QuantConnect/Lean,kaffeebrauer/Lean,StefanoRaggi/Lean,AnshulYADAV007/Lean,redmeros/Lean,redmeros/Lean,andrewhart098/Lean,Mendelone/forex_trading,kaffeebrauer/Lean,kaffeebrauer/Lean,StefanoRaggi/Lean,andrewhart098/Lean,Jay-Jay-D/LeanSTP