fixing sonar

Author: santhosh-7777

webapp/src/ts/components/report-image/report-image.component.html

@@ -2,5 +2,6 @@
   <div class="loader"></div>
 }
 @if (!loading) {
-  <img class="report-image" [src]="objectUrl" />
+  <img class="report-image" [src]="objectUrl" alt="" />
 }
+

webapp/src/ts/components/snackbar/snackbar.component.html

@@ -3,9 +3,10 @@
     <span class="snackbar-message">{{message}}</span>
 
     @if (action) {
-      <span class="snackbar-action" (click)="action.onClick()">
-        {{action.label}}
-      </span>
+      <span class="snackbar-action"
+            (click)="action.onClick()"
+            (keydown.enter)="action.onClick()"
+            tabindex="0">{{action.label}}</span>
     }
 
   </span>