migrate report-layout component (#10545)

apps/web/src/app/tools/reports/reports-layout.component.html

@@ -1,9 +1,8 @@
 <router-outlet></router-outlet>
 
-<div class="row mt-4">
+<div class="row tw-mt-4">
   <div class="col">
-    <a bitButton routerLink="./" *ngIf="!homepage">
-      <i class="bwi bwi-angle-left" aria-hidden="true"></i>
+    <a bitButton bitIconButton="bwi-angle-left" routerLink="./" *ngIf="!homepage">
       {{ "backToReports" | i18n }}
     </a>
   </div>