[ACS-10321] SR: Personal Files:When navigating the breadcrumb with arrow keys, a button announced as 'dropdown' (#11262)

lib/content-services/src/lib/breadcrumb/dropdown-breadcrumb.component.html

@@ -7,7 +7,9 @@
         [tabindex]="hasPreviousNodes() ? 0 : -1"
         class="adf-dropdown-breadcrumb-trigger"
         (click)="open()"
-        [attr.aria-label]="'BREADCRUMB.ARIA-LABEL.DROPDOWN' | translate"
+        [attr.aria-label]="'BREADCRUMB.ARIA-LABEL.DROPDOWN' | translate:{ folderName: currentNode?.name }"
+        [attr.aria-haspopup]="hasPreviousNodes() ? 'true' : null"
+        [attr.aria-expanded]="dropdown?.panelOpen || false"
         data-automation-id="dropdown-breadcrumb-trigger">
         <mat-icon class="adf-dropdown-breadcrumb-icon" [class.adf-isRoot]="!hasPreviousNodes()">folder</mat-icon>
     </button>

lib/content-services/src/lib/i18n/en.json

@@ -660,8 +660,8 @@
   },
   "BREADCRUMB": {
     "ARIA-LABEL": {
-      "BREADCRUMB": "Breadcrumb",
-      "DROPDOWN": "Dropdown"
+      "BREADCRUMB": "Breadcrumb navigation",
+      "DROPDOWN": "Open breadcrumb menu for {{folderName}}"
     },
     "HEADER": {
       "SELECTED": "Selected ({{ count }})"