Allow graphical fill to be read as boolean

We had been allowing yes/solid/none with yes/solid both representing
true and none representing false.  This adds the complimentary boolean

Fixes https://gitlab.com/kicad/code/kicad/-/issues/16262

pcbnew/plugins/kicad/pcb_parser.cpp

@@ -2957,11 +2957,12 @@ PCB_SHAPE* PCB_PARSER::parsePCB_SHAPE( BOARD_ITEM* aParent )
                     break;
 
                 case T_none:
+                case T_no:
                     shape->SetFilled( false );
                     break;
 
                 default:
-                    Expecting( "yes, none, solid" );
+                    Expecting( "yes, no, solid, none" );
                 }
             }