Set cursor via the public API SetCursorPosition in AcceptLineImpl for better buffer check (#1182)

Instead of _console.SetCursorPosition(), use public API SetCursorPosition so that existing end of buffer checks can be performed.

Author: msftrncs

PSReadLine/BasicEditing.cs

@@ -272,8 +272,8 @@ private bool AcceptLineImpl(bool validate)
                 ClearStatusMessage(render: true);
             }
 
-            var point = ConvertOffsetToPoint(_current);
-            _console.SetCursorPosition(point.X, point.Y);
+            // Let public API set cursor to end of line incase end of line is end of buffer
+            SetCursorPosition(_current);
             _console.Write("\n");
             _inputAccepted = true;
             return true;