Avoid a byte[] in Guid construction in TypeConverter (#105208)

Also clean up a stale optimization in Guid's ctor

Author: xtqqczze

src/libraries/System.ComponentModel.TypeConverter/src/System/ComponentModel/Design/StandardCommands.cs

@@ -1346,7 +1346,7 @@ private static class ShellGuids
             internal static readonly Guid guidDsdCmdId = new Guid("{1F0FD094-8e53-11d2-8f9c-0060089fc486}");
             internal static readonly Guid SID_SOleComponentUIManager = new Guid("{5efc7974-14bc-11cf-9b2b-00aa00573819}");
             internal static readonly Guid GUID_VSTASKCATEGORY_DATADESIGNER = new Guid("{6B32EAED-13BB-11d3-A64F-00C04F683820}");
-            internal static readonly Guid GUID_PropertyBrowserToolWindow = new Guid(unchecked((int)0xeefa5220), unchecked((short)0xe298), unchecked((short)0x11d0), new byte[] { 0x8f, 0x78, 0x0, 0xa0, 0xc9, 0x11, 0x0, 0x57 });
+            internal static readonly Guid GUID_PropertyBrowserToolWindow = new Guid(0xeefa5220, 0xe298, 0x11d0, 0x8f, 0x78, 0x0, 0xa0, 0xc9, 0x11, 0x0, 0x57);
         }
     }
 }

src/libraries/System.Private.CoreLib/src/System/Guid.cs

@@ -130,14 +130,14 @@ public Guid(int a, short b, short c, byte[] d)
             _a = a;
             _b = b;
             _c = c;
-            _k = d[7]; // hoist bounds checks
             _d = d[0];
             _e = d[1];
             _f = d[2];
             _g = d[3];
             _h = d[4];
             _i = d[5];
             _j = d[6];
+            _k = d[7];
         }
 
         // Creates a new GUID initialized to the value represented by the