Fix issues with plotting textbox outlines.

Fixes https://gitlab.com/kicad/code/kicad/issues/11943

pcbnew/board.cpp

@@ -2305,6 +2305,11 @@ void BOARD::ConvertBrdLayerToPolygonalContours( PCB_LAYER_ID aLayer,
         case PCB_TEXTBOX_T:
         {
             const PCB_TEXTBOX* textbox = static_cast<const PCB_TEXTBOX*>( item );
+
+            // plot border
+            textbox->PCB_SHAPE::TransformShapeWithClearanceToPolygon( aOutlines, aLayer, 0,
+                                                                      maxError, ERROR_INSIDE );
+            // plot text
             textbox->TransformTextShapeWithClearanceToPolygon( aOutlines, aLayer, 0, maxError,
                                                                ERROR_INSIDE );
             break;

pcbnew/pcb_textbox.cpp

@@ -436,8 +436,8 @@ std::shared_ptr<SHAPE> PCB_TEXTBOX::GetEffectiveShape( PCB_LAYER_ID aLayer, FLAS
 
 
 void PCB_TEXTBOX::TransformTextShapeWithClearanceToPolygon( SHAPE_POLY_SET& aCornerBuffer,
-                                                         PCB_LAYER_ID aLayer, int aClearance,
-                                                         int aError, ERROR_LOC aErrorLoc ) const
+                                                            PCB_LAYER_ID aLayer, int aClearance,
+                                                            int aError, ERROR_LOC aErrorLoc ) const
 {
     KIGFX::GAL_DISPLAY_OPTIONS empty_opts;
     KIFONT::FONT*              font = GetDrawFont();
@@ -459,7 +459,7 @@ void PCB_TEXTBOX::TransformTextShapeWithClearanceToPolygon( SHAPE_POLY_SET& aCor
                     aCornerBuffer.Append( point.x, point.y );
             } );
 
-    font->Draw( &callback_gal, GetShownText(), GetTextPos(), GetAttributes() );
+    font->Draw( &callback_gal, GetShownText(), GetDrawPos(), GetAttributes() );
 }