Why is the transcription response has no `usage` data ?

[linyongfu2013]

Please do a quick search on GitHub issues first, there might be already a duplicate issue for the one you are about to create.
If the bug is trivial, just go ahead and create the issue. Otherwise, please take a few moments and fill in the following sections:

Bug description
the transcription response has no usage data , it's a very important data.

Environment
<java.version>21</java.version>
<spring-ai.version>1.1.2</spring-ai.version>
springboot: 3.5.7

Steps to reproduce
Steps to reproduce the issue.

Expected behavior
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Minimal Complete Reproducible example
Please provide a failing test or a minimal complete verifiable example that reproduces the issue.
Bug reports that are reproducible will take priority in resolution over reports that are not reproducible.

[linyongfu2013]

[linyongfu2013]

and one more thing, the OpenAiAudioTranscriptionModel has no streaming method, the openai transcription api supports streaming.