我正在使用角材料日期选择器，但当我将鼠标悬停在星期日时，它会选择下周my datepicker。我想这是因为我使用以下选项将第一天更改为星期一

import { NativeDateAdapter } from '@angular/material/core';

export class CustomDateAdapter extends NativeDateAdapter {
    override getFirstDayOfWeek(): number {
        return 1;
    }
}

我用来计算一周的范围的 typescript ：

@Injectable()
export class FiveDayRangeSelectionStrategy<D> implements MatDateRangeSelectionStrategy<D> {
  constructor(private _dateAdapter: DateAdapter<D>) {}

  selectionFinished(date: D | null): DateRange<D> {
    return this._createFiveDayRange(date);
  }

  createPreview(activeDate: D | null): DateRange<D> {
    return this._createFiveDayRange(activeDate);
  }

  private _createFiveDayRange(date: D | null): DateRange<D> {
    if (date) {
      console.log(date)
      const start = this._getMondayBefore(date);
      const end = this._getSundayAfter(start);
      return new DateRange<D>(start, end);
    }
    return new DateRange<D>(null, null);
  }
  private _getMondayBefore(date: D): D {
    const dayOfWeek = this._dateAdapter.getDayOfWeek(date);
    const daysToSubtract = dayOfWeek - (this._dateAdapter.getFirstDayOfWeek());
    return this._dateAdapter.addCalendarDays(date, -daysToSubtract);
  }

  private _getSundayAfter(date: D): D {
    const dayOfWeek = this._dateAdapter.getDayOfWeek(date);
    const daysToAdd = 8 - dayOfWeek - this._dateAdapter.getFirstDayOfWeek();
    return this._dateAdapter.addCalendarDays(date, daysToAdd);
  }
}

@Component({
  selector: 'app-browser',
  templateUrl: './browser.component.html',
  styleUrls: ['./browser.component.scss'],
  providers: [
    {
      provide: MAT_DATE_RANGE_SELECTION_STRATEGY,
      useClass: FiveDayRangeSelectionStrategy,
    },
  ],
})

和我的html：

<mat-form-field appearance="fill">
        <mat-label>Enter a date range</mat-label>
        <mat-date-range-input [rangePicker]="picker">
          <input matStartDate placeholder="Start date">
          <input matEndDate placeholder="End date">
        </mat-date-range-input>
        <mat-datepicker-toggle matIconSuffix [for]="picker"></mat-datepicker-toggle>
        <mat-date-range-picker #picker></mat-date-range-picker>
    </mat-form-field>

我试着改变daysToAdd和daysToSubtract，但这只是改变了范围。而不是事实上，它选择下周时，悬停在周日。有人知道如何得到它，使它选择当前的星期一到周日？