Add missing test to generate compose file when spring-ai-vectordb-neo…

…4j is selected

See gh-1576

start-site/src/test/java/io/spring/start/site/extension/dependency/neo4j/Neo4jProjectGenerationConfigurationTests.java

@@ -45,4 +45,10 @@ void createsNeo4jService() {
 		assertThat(composeFile(request)).hasSameContentAs(new ClassPathResource("compose/neo4j.yaml"));
 	}
 
+	@Test
+	void createsNeo4jServiceWhenSpringAiModuleIsSelected() {
+		ProjectRequest request = createProjectRequest("docker-compose", "spring-ai-vectordb-neo4j");
+		assertThat(composeFile(request)).hasSameContentAs(new ClassPathResource("compose/neo4j.yaml"));
+	}
+
 }