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

libraries/pushproviders/test/src/main/kotlin/io/element/android/libraries/pushproviders/test/FakePushProvider.kt

@@ -17,7 +17,9 @@ import io.element.android.tests.testutils.lambda.lambdaError
 class FakePushProvider(
     override val index: Int = 0,
     override val name: String = "aFakePushProvider",
+    override val supportMultipleDistributors: Boolean = false,
     private val distributors: List<Distributor> = listOf(Distributor("aDistributorValue", "aDistributorName")),
+    private val currentDistributorValue: () -> String? = { lambdaError() },
     private val currentDistributor: () -> Distributor? = { distributors.firstOrNull() },
     private val currentUserPushConfig: CurrentUserPushConfig? = null,
     private val registerWithResult: (MatrixClient, Distributor) -> Result<Unit> = { _, _ -> lambdaError() },
@@ -32,6 +34,10 @@ class FakePushProvider(
         return registerWithResult(matrixClient, distributor)
     }
 
+    override suspend fun getCurrentDistributorValue(sessionId: SessionId): String? {
+        return currentDistributorValue()
+    }
+
     override suspend fun getCurrentDistributor(sessionId: SessionId): Distributor? {
         return currentDistributor()
     }