Change: Show "Delete All" in order window delete button when applicable (#15370)

src/lang/english.txt

@@ -4759,6 +4759,7 @@ STR_ORDERS_SKIP_BUTTON                                          :{BLACK}Skip
 STR_ORDERS_SKIP_TOOLTIP                                         :{BLACK}Skip the current order, and start the next. Ctrl+Click to skip to the selected order
 
 STR_ORDERS_DELETE_BUTTON                                        :{BLACK}Delete
+STR_ORDERS_DELETE_ALL_BUTTON                                    :{BLACK}Delete All
 STR_ORDERS_DELETE_TOOLTIP                                       :{BLACK}Delete the highlighted order
 STR_ORDERS_DELETE_ALL_TOOLTIP                                   :{BLACK}Delete all orders
 STR_ORDERS_STOP_SHARING_BUTTON                                  :{BLACK}Stop sharing

src/order_gui.cpp

@@ -819,6 +819,14 @@ public:
 				size = maxdim(size, d);
 				break;
 			}
+
+			case WID_O_DELETE: {
+				Dimension d = maxdim(GetStringBoundingBox(STR_ORDERS_DELETE_BUTTON), GetStringBoundingBox(STR_ORDERS_DELETE_ALL_BUTTON));
+				d.width += padding.width;
+				d.height += padding.height;
+				size = maxdim(size, d);
+				break;
+			}
 		}
 	}
 
@@ -924,7 +932,7 @@ public:
 			 * 'End of Orders' order or a regular order is selected. */
 			NWidgetCore *nwi = this->GetWidget<NWidgetCore>(WID_O_DELETE);
 			if (this->selected_order == this->vehicle->GetNumOrders()) {
-				nwi->SetStringTip(STR_ORDERS_DELETE_BUTTON, STR_ORDERS_DELETE_ALL_TOOLTIP);
+				nwi->SetStringTip(STR_ORDERS_DELETE_ALL_BUTTON, STR_ORDERS_DELETE_ALL_TOOLTIP);
 			} else {
 				nwi->SetStringTip(STR_ORDERS_DELETE_BUTTON, STR_ORDERS_DELETE_TOOLTIP);
 			}