Merged in task/dspace-cris-2023_02_x/DSC-2381 (pull request DSpace#3256)

[DSC-2381] fix card view

Approved-by: Francesco Molinaro
Approved-by: Vincenzo Mecca

Author: Andrea Barbasso

src/app/shared/object-grid/object-grid.component.html

@@ -16,7 +16,7 @@
   (next)="goNext()"
   >
     <div class="card-columns row" *ngIf="objects?.hasSucceeded">
-      <div class="card-column col col-sm-6 col-lg-4" *ngFor="let column of (columns$ | async)" @fadeIn>
+      <div class="card-column col-sm-6 col-lg-4" *ngFor="let column of (columns$ | async)" @fadeIn>
         <div class="card-element" *ngFor="let object of column" [attr.data-test]="'grid-object' | dsBrowserOnly">
           <ds-listable-object-component-loader [object]="object"
                                                [viewMode]="viewMode"

src/app/shared/search/search-results/search-results-skeleton/search-results-skeleton.component.html

@@ -32,7 +32,7 @@
   <ng-template #grid>
     <div class="card-columns row">
       <ng-container *ngFor="let result of loadingResults">
-        <div class="card-column col col-sm-6 col-lg-4">
+        <div class="card-column col-sm-6 col-lg-4">
           <div class="card-skeleton">
             <ngx-skeleton-loader/>
           </div>