520 Deduplicate and EMBEDDED-scope connection ids in getConnections

Merge caller-provided connectionIds into a single LinkedHashSet with the
integration-instance and connected-user connection ids, then resolve them
through one typed getConnections(ids, EMBEDDED) call. This removes duplicate
ConnectionDTOs and drops the untyped getConnection(id) fetches that bypassed
EMBEDDED scoping.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: ivicac

server/ee/libs/embedded/embedded-configuration/embedded-configuration-service/src/main/java/com/bytechef/ee/embedded/configuration/facade/ConnectedUserConnectionFacadeImpl.java

@@ -18,7 +18,9 @@
 import com.bytechef.platform.constant.PlatformType;
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import java.util.ArrayList;
+import java.util.LinkedHashSet;
 import java.util.List;
+import java.util.Set;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -61,10 +63,10 @@ public long createConnectedUserConnection(long connectedUserId, ConnectionDTO co
     public List<ConnectionDTO> getConnections(
         Long connectedUserId, String componentName, List<Long> connectionIds) {
 
-        List<Long> allConnectionIds = new ArrayList<>();
-
         ConnectedUser connectedUser = connectedUserService.getConnectedUser(connectedUserId);
 
+        Set<Long> allConnectionIds = new LinkedHashSet<>();
+
         allConnectionIds.addAll(
             integrationInstanceService
                 .getIntegrationInstances(connectedUser.getId(), componentName, connectedUser.getEnvironment())
@@ -73,16 +75,9 @@ public List<ConnectionDTO> getConnections(
                 .toList());
 
         allConnectionIds.addAll(connectedUserConnectionService.getConnectionIds(connectedUser.getId()));
+        allConnectionIds.addAll(connectionIds);
 
-        List<ConnectionDTO> connectionDTOs = new ArrayList<>(
-            connectionFacade.getConnections(allConnectionIds, PlatformType.EMBEDDED));
-
-        connectionDTOs.addAll(
-            connectionIds.stream()
-                .map(connectionFacade::getConnection)
-                .toList());
-
-        return connectionDTOs
+        return connectionFacade.getConnections(new ArrayList<>(allConnectionIds), PlatformType.EMBEDDED)
             .stream()
             .filter(connectionDTO -> componentName.equals(connectionDTO.componentName()))
             .toList();