[ACA-2789] - edit button a11y fixes (#5399)

* fix: remove title property from button

* use tooltip instead of aria label

* fix aria label

Co-authored-by: Taylor Richards <taylor.richards@deque.com>
Co-authored-by: Denys Vuika <denys.vuika@gmail.com>

lib/content-services/src/lib/content-metadata/components/content-metadata-card/content-metadata-card.component.html

@@ -17,7 +17,7 @@
                 mat-icon-button
                 (click)="toggleEdit()"
                 [attr.title]="'CORE.METADATA.ACTIONS.EDIT' | translate"
-                [attr.aria-label]="'CORE.METADATA.ACTIONS.EDIT' | translate"
+                [attr.aria-label]="'CORE.METADATA.ACCESSIBILITY.EDIT' | translate"
                 data-automation-id="meta-data-card-toggle-edit">
                 <mat-icon>mode_edit</mat-icon>
             </button>

lib/core/i18n/en.json

@@ -201,6 +201,7 @@
         "TOGGLE": "Toggle value"
       },
       "ACCESSIBILITY": {
+        "EDIT": "Edit button",
         "DATEPICKER": "Use the arrow keys to navigate between dates. Up and down move to the next or previous week but on the same day. Left and right move to the next or previous day. Press Enter or Return to select a date."
       }
     },