do not use default message if null passed for SystemException, ApplicationException, IOException

Author: OwnageIsMagic

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

@@ -33,13 +33,13 @@ public ApplicationException()
         // and its ExceptionInfo reference set to null.
         //
         public ApplicationException(string? message)
-            : base(message ?? SR.Arg_ApplicationException)
+            : base(message)
         {
             HResult = HResults.COR_E_APPLICATION;
         }
 
         public ApplicationException(string? message, Exception? innerException)
-            : base(message ?? SR.Arg_ApplicationException, innerException)
+            : base(message, innerException)
         {
             HResult = HResults.COR_E_APPLICATION;
         }

src/libraries/System.Private.CoreLib/src/System/IO/IOException.cs

@@ -18,19 +18,19 @@ public IOException()
         }
 
         public IOException(string? message)
-            : base(message ?? SR.Arg_IOException)
+            : base(message)
         {
             HResult = HResults.COR_E_IO;
         }
 
         public IOException(string? message, int hresult)
-            : base(message ?? SR.Arg_IOException)
+            : base(message)
         {
             HResult = hresult;
         }
 
         public IOException(string? message, Exception? innerException)
-            : base(message ?? SR.Arg_IOException, innerException)
+            : base(message, innerException)
         {
             HResult = HResults.COR_E_IO;
         }

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

@@ -18,13 +18,13 @@ public SystemException()
         }
 
         public SystemException(string? message)
-            : base(message ?? SR.Arg_SystemException)
+            : base(message)
         {
             HResult = HResults.COR_E_SYSTEM;
         }
 
         public SystemException(string? message, Exception? innerException)
-            : base(message ?? SR.Arg_SystemException, innerException)
+            : base(message, innerException)
         {
             HResult = HResults.COR_E_SYSTEM;
         }