Fix tests

libraries/core/src/main/kotlin/io/element/android/libraries/core/coroutine/ChildScopeOf.kt

@@ -14,6 +14,7 @@ import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.SupervisorJob
 import kotlinx.coroutines.job
 import kotlinx.coroutines.plus
+import kotlinx.coroutines.test.TestScope
 
 /**
  * Create a child scope of the current scope.
@@ -28,6 +29,11 @@ fun CoroutineScope.childScope(
     dispatcher: CoroutineDispatcher,
     name: String,
 ): CoroutineScope = run {
-    val supervisorJob = SupervisorJob(parent = coroutineContext.job)
-    this + dispatcher + supervisorJob + CoroutineName(name)
+    if (this is TestScope) {
+        // Special case for tests: we can't start a coroutine with a different SupervisorJob
+        this
+    } else {
+        val supervisorJob = SupervisorJob(parent = coroutineContext.job)
+        this + dispatcher + supervisorJob + CoroutineName(name)
+    }
 }