fix(module:cron-expression): clear ul & li default style (#7715)

Author: OriginRing

components/cron-expression/cron-expression.component.ts

@@ -76,7 +76,7 @@ import { CronChangeType, CronType, NzCronExpressionSize, TimeType } from './typi
           <nz-collapse-panel [nzHeader]="nextDate">
             <ng-container *ngIf="validateForm.valid">
               <ul class="ant-cron-expression-preview-date">
-                <li style="margin: 0" *ngFor="let dateItem of nextTimeList">
+                <li *ngFor="let dateItem of nextTimeList">
                   {{ dateItem | date: 'YYYY-MM-dd HH:mm:ss' }}
                 </li>
                 <li><a (click)="loadMorePreview()">···</a></li>

components/cron-expression/cron-expression.module.ts

@@ -3,7 +3,6 @@
  * found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE
  */
 
-import { ScrollingModule } from '@angular/cdk/scrolling';
 import { CommonModule } from '@angular/common';
 import { NgModule } from '@angular/core';
 import { FormsModule, ReactiveFormsModule } from '@angular/forms';
@@ -28,8 +27,7 @@ import { NzCronExpressionComponent } from './cron-expression.component';
     NzFormModule,
     NzInputModule,
     NzIconModule,
-    FormsModule,
-    ScrollingModule
+    FormsModule
   ],
   exports: [NzCronExpressionComponent]
 })

components/cron-expression/style/index.less

@@ -93,6 +93,13 @@
   &-preview-date {
     overflow-y: scroll;
     height: 132px;
+    margin: 0;
+    padding: 0;
+     li {
+       list-style: none;
+       margin: 0;
+       padding: 0;
+     }
   }
 
   &-error {