!2748 优化:是否是顶底板大孔面判断

src/UI/Components/Board/BoardProcessModal.tsx

@@ -395,7 +395,7 @@ export class BoardProcessModal extends React.Component<BoardProcessProps, {}>
                     <label className="bp3-label bp3-inline .modifier">
                         <span>大孔面:</span>
                         <HTMLSelect
-                            value={this.props.topBottomOption?.bigHoleDir ? this.props.topBottomOption.bigHoleDir.toString() : this.props.opt.bigHoleDir.toString()}
+                            value={this.props.topBottomOption?.bigHoleDir != undefined ? this.props.topBottomOption.bigHoleDir.toString() : this.props.opt.bigHoleDir.toString()}
                             options={
                                 this.getOptions(this.props.type)
                             }

src/UI/Components/Board/TopBottomBoardModal.tsx

@@ -113,7 +113,7 @@ export const TopBottomBoardModal =
                         <label className="bp3-label bp3-inline .modifier">
                             <span>大孔面:</span>
                             <HTMLSelect
-                                value={store.bottomBoardOption?.bigHoleDir ? store.bottomBoardOption.bigHoleDir.toString() : store.bottomBoardOption.bigHoleDir.toString()}
+                                value={store.bottomBoardOption?.bigHoleDir != undefined ? store.bottomBoardOption.bigHoleDir.toString() : store.bottomBoardOption.bigHoleDir.toString()}
                                 options={
                                     [
                                         {