Improve current push provider test: give info about the distributor.

libraries/pushproviders/unifiedpush/src/main/kotlin/io/element/android/libraries/pushproviders/unifiedpush/UnifiedPushProvider.kt

@@ -29,6 +29,7 @@ class UnifiedPushProvider(
 ) : PushProvider {
     override val index = UnifiedPushConfig.INDEX
     override val name = UnifiedPushConfig.NAME
+    override val supportMultipleDistributors = true
 
     override fun getDistributors(): List<Distributor> {
         return unifiedPushDistributorProvider.getDistributors()
@@ -42,6 +43,10 @@ class UnifiedPushProvider(
             }
     }
 
+    override suspend fun getCurrentDistributorValue(sessionId: SessionId): String? {
+        return unifiedPushStore.getDistributorValue(sessionId)
+    }
+
     override suspend fun getCurrentDistributor(sessionId: SessionId): Distributor? {
         val distributorValue = unifiedPushStore.getDistributorValue(sessionId)
         return getDistributors().find { it.value == distributorValue }