feat(google): Support Lyria on Vertex

[afirstenberg]

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As noted in the tests added in #10522, Vertex uses a completely different API to generate Lyria output.
See https://docs.cloud.google.com/vertex-ai/generative-ai/docs/music/generate-music#lyria-3-rest

[afirstenberg]

As Hunter Lovell (@hntrl) has pointed out, this appears to be the interactions API, which had not been announced for Vertex before.