Bug description
The value of spring.ai.vectorstore.elasticsearch.embedding-field-name is missed when configuring ElasticsearchVectorStore in ElasticsearchVectorStoreAutoConfiguration

Environment
Version 1.0.0

Steps to reproduce

1. set spring.ai.vectorstore.elasticsearch.embedding-field-name to any value except 'embedding'
2. run application
3. org.springframework.ai.vectorstore.elasticsearch.ElasticsearchVectorStoreOptions#embeddingFieldName is not set correctly

Expected behavior
org.springframework.ai.vectorstore.elasticsearch.ElasticsearchVectorStoreOptions#embeddingFieldName is set correctly to the spring.ai.vectorstore.elasticsearch.embedding-field-name property value.