DO NOT MERGE: Fix interaction tracking logic

Tried to put a clever kotlin-ism there, but then the interaction tracker
was returning `true` for every notification because it only checked if
the key existed

Test: manual
Bug: 144324894
Bug: 119041698
Change-Id: Ie2f489acca973c0aebbd8e7d8fc7fbef2bac793f

packages/SystemUI/src/com/android/systemui/statusbar/NotificationInteractionTracker.kt

@@ -23,7 +23,9 @@ class NotificationInteractionTracker @Inject constructor(
         entryManager.addNotificationEntryListener(this)
     }
 
-    fun hasUserInteractedWith(key: String): Boolean = key in interactions
+    fun hasUserInteractedWith(key: String): Boolean {
+        return interactions[key] ?: false
+    }
 
     override fun onNotificationAdded(entry: NotificationEntry) {
         interactions[entry.key] = false