Force adding a contentDescription to work around AccessibilityViewCheckException

```
Roborazzi: Error: [AccessibilityViewCheckResult check=AccessibilityHierarchyCheckResult ERROR SpeakableTextPresentCheck 4 [ViewHierarchyElement class=android.view.View testTag=newsResourceCard:3 bounds=Rect(1058, 2126 - 1947, 2523)] null num_answers:0 view=null]
```

Author: SimonMarquis

core/ui/src/main/kotlin/com/google/samples/apps/nowinandroid/core/ui/NewsResourceCard.kt

@@ -118,6 +118,7 @@ fun NewsResourceCardExpanded(
         // Pass null for action to only override the label and not the actual action.
         modifier = modifier
             .semantics {
+                contentDescription = clickActionLabel
                 onClick(label = clickActionLabel, action = null)
             }
             .testTag("newsResourceCard:${userNewsResource.id}"),