misc: chore: Use collection expressions (part 2)

src/Ryujinx.HLE/HOS/Kernel/Process/HleProcessDebugger.cs

@@ -40,7 +40,7 @@ namespace Ryujinx.HLE.HOS.Kernel.Process
         {
             _owner = owner;
 
-            _images = new List<Image>();
+            _images = [];
         }
 
         public string GetGuestStackTrace(KThread thread)

src/Ryujinx.HLE/HOS/Kernel/Process/KProcess.cs

@@ -107,7 +107,7 @@ namespace Ryujinx.HLE.HOS.Kernel.Process
             // TODO: Remove once we no longer need to initialize it externally.
             HandleTable = new KHandleTable();
 
-            _threads = new LinkedList<KThread>();
+            _threads = [];
 
             Debugger = new HleProcessDebugger(this);
         }