Give ability to configure the UnifiedPush default push gateway.

features/enterprise/api/src/main/kotlin/io/element/android/features/enterprise/api/EnterpriseService.kt

@@ -19,4 +19,5 @@ interface EnterpriseService {
     fun semanticColorsDark(): SemanticColors
 
     fun firebasePushGateway(): String?
+    fun unifiedPushDefaultPushGateway(): String?
 }

features/enterprise/impl/src/main/kotlin/io/element/android/features/enterprise/impl/DefaultEnterpriseService.kt

@@ -29,4 +29,5 @@ class DefaultEnterpriseService @Inject constructor() : EnterpriseService {
     override fun semanticColorsDark(): SemanticColors = compoundColorsDark
 
     override fun firebasePushGateway(): String? = null
+    override fun unifiedPushDefaultPushGateway(): String? = null
 }

features/enterprise/test/src/main/kotlin/io/element/android/features/enterprise/test/FakeEnterpriseService.kt

@@ -20,6 +20,7 @@ class FakeEnterpriseService(
     private val semanticColorsLightResult: () -> SemanticColors = { lambdaError() },
     private val semanticColorsDarkResult: () -> SemanticColors = { lambdaError() },
     private val firebasePushGatewayResult: () -> String? = { lambdaError() },
+    private val unifiedPushDefaultPushGatewayResult: () -> String? = { lambdaError() },
 ) : EnterpriseService {
     override suspend fun isEnterpriseUser(sessionId: SessionId): Boolean = simulateLongTask {
         isEnterpriseUserResult(sessionId)
@@ -41,6 +42,10 @@ class FakeEnterpriseService(
         return firebasePushGatewayResult()
     }
 
+    override fun unifiedPushDefaultPushGateway(): String? {
+        return unifiedPushDefaultPushGatewayResult()
+    }
+
     companion object {
         const val A_FAKE_HOMESERVER = "a_fake_homeserver"
     }