fix(module:time-picker): fix AM/PM selector hide (#7701)

Author: luckyship

components/time-picker/time-picker-panel.component.spec.ts

@@ -343,6 +343,15 @@ describe('time-picker-panel', () => {
       expect(listHourLi[6].classList).toContain('ant-picker-time-panel-cell-disabled');
       expect(listHourLi[7].classList).toContain('ant-picker-time-panel-cell-disabled');
       expect(listHourLi[8].classList).toContain('ant-picker-time-panel-cell-disabled');
+
+      fixture12Hour.detectChanges();
+      tick(500);
+      flush();
+      listHourLi = panelElement.nativeElement
+        .querySelectorAll('.ant-picker-time-panel-column')[3]
+        .querySelectorAll('li');
+
+      expect(listHourLi.length).not.toBe(0);
     }));
   });
 });
@@ -451,6 +460,7 @@ export class NzTest12HourTimePanelComponent {
       [nzDisabledHours]="disabledHours"
       [nzDisabledMinutes]="disabledMinutes"
       [nzDisabledSeconds]="disabledSeconds"
+      [nzHideDisabledOptions]="false"
     ></nz-time-picker-panel>
   `,
   styleUrls: ['../style/index.less', './style/index.less']

components/time-picker/time-picker-panel.component.ts

@@ -90,7 +90,6 @@ export type NzTimePickerUnit = 'hour' | 'minute' | 'second' | '12-hour';
       <ul *ngIf="nzUse12Hours" #use12HoursListElement class="ant-picker-time-panel-column" style="position: relative;">
         <ng-container *ngFor="let range of use12HoursRange">
           <li
-            *ngIf="!nzHideDisabledOptions"
             (click)="select12Hours(range)"
             class="ant-picker-time-panel-cell"
             [class.ant-picker-time-panel-cell-selected]="isSelected12Hours(range)"