Fix connection port for MongoDB dev services using shared network

The hostname was fixed in #42065 but when using a shared network and a
container build, the application will connect directly to the container
port so we shouldn't use the exposed port but the original one.

Fixes #42453

extensions/mongodb-client/deployment/src/main/java/io/quarkus/mongodb/deployment/DevServicesMongoProcessor.java

@@ -178,7 +178,7 @@ private RunningDevService startMongo(DockerStatusBuildItem dockerStatusBuildItem
         }
 
         Supplier<RunningDevService> defaultMongoServerSupplier = () -> {
-            MongoDBContainer mongoDBContainer;
+            QuarkusMongoDBContainer mongoDBContainer;
             if (capturedProperties.imageName != null) {
                 mongoDBContainer = new QuarkusMongoDBContainer(
                         DockerImageName.parse(capturedProperties.imageName).asCompatibleSubstituteFor("mongo"),
@@ -189,8 +189,9 @@ private RunningDevService startMongo(DockerStatusBuildItem dockerStatusBuildItem
             timeout.ifPresent(mongoDBContainer::withStartupTimeout);
             mongoDBContainer.withEnv(capturedProperties.containerEnv);
             mongoDBContainer.start();
-            final String effectiveUrl = getEffectiveUrl(configPrefix, mongoDBContainer.getHost(),
-                    mongoDBContainer.getMappedPort(MONGO_EXPOSED_PORT), capturedProperties);
+
+            final String effectiveUrl = getEffectiveUrl(configPrefix, mongoDBContainer.getEffectiveHost(),
+                    mongoDBContainer.getEffectivePort(), capturedProperties);
             return new RunningDevService(Feature.MONGODB_CLIENT.getName(), mongoDBContainer.getContainerId(),
                     mongoDBContainer::close, getConfigPrefix(connectionName) + "connection-string", effectiveUrl);
         };
@@ -314,9 +315,12 @@ public String getReplicaSetUrl(String databaseName) {
             }
         }
 
-        @Override
-        public String getHost() {
+        public String getEffectiveHost() {
             return useSharedNetwork ? hostName : super.getHost();
         }
+
+        public Integer getEffectivePort() {
+            return useSharedNetwork ? MONGODB_INTERNAL_PORT : getMappedPort(MONGO_EXPOSED_PORT);
+        }
     }
 }