Hide Element Call entry point if Element Call service is not available. (#4783)

* Hide Element Call entry point if Element Call service is not available.

* No need to preview the case RoomCallState.Unavailable

* Hide start call action from user profile if Element Call is not available.

* Add mising `use` and cover the problem by a test.

* Update screenshots

* Update enterprise submodule ref.

* Ensure `enterpriseService.isElementCallAvailable()` is not called several times.
And fix unit tests on CI

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Co-authored-by: ElementBot <android@element.io>

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

@@ -18,6 +18,7 @@ class FakeEnterpriseService(
     private val isEnterpriseUserResult: (SessionId) -> Boolean = { lambdaError() },
     private val defaultHomeserverListResult: () -> List<String> = { emptyList() },
     private val isAllowedToConnectToHomeserverResult: (String) -> Boolean = { lambdaError() },
+    private val isElementCallAvailableResult: () -> Boolean = { lambdaError() },
     private val semanticColorsLightResult: () -> SemanticColors = { lambdaError() },
     private val semanticColorsDarkResult: () -> SemanticColors = { lambdaError() },
     private val firebasePushGatewayResult: () -> String? = { lambdaError() },
@@ -35,6 +36,10 @@ class FakeEnterpriseService(
         isAllowedToConnectToHomeserverResult(homeserverUrl)
     }
 
+    override suspend fun isElementCallAvailable(): Boolean = simulateLongTask {
+        isElementCallAvailableResult()
+    }
+
     override fun semanticColorsLight(): SemanticColors {
         return semanticColorsLightResult()
     }