Turn Instant Pot on saute mode and add olive oil. Once heated, add garlic and red onion. Cook until onion is softened, about 10 minutes. Then, stir in shredded chicken with it's liquid, curry powder, lemongrass paste, basil, cilantro, lime juice and cannellini beans. Let simmer for about 3-4 minutes, then remove from heat. For slow cooker method, stir together all ingredients in a large pot on stove top over low heat. Let simmer on low, uncovered, for 10 minutes.