Explicit AutoConfiguration import needed for VertexAiEmbeddingConnectionAutoConfiguration

[tschut]

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With #4494, VertexAiEmbeddingConnectionAutoConfiguration (and a lot of others) are no longer included in @ImportAutoConfiguration annotations in the relevant AutoConfigurations for the models. However, they also aren't added to the org.springframework.boot.autoconfigure.AutoConfiguration.imports, meaning a using application would have to import the VertexAiEmbeddingConnectionAutoConfiguration themselves.

If you don't:

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.springframework.ai.vertexai.embedding.VertexAiEmbeddingConnectionDetails' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:2314)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1733)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1653)
	at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:913)
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791)
	... 45 more