Index 0 out of bounds for length 0 exception in BedrockAnthropic3ChatModel

[ShaunDeng]

Bug description
Some models like BedrockAnthropic3 support stopSequences parameter, while the completions meet that token it will stop to generate. So there's a change to make model not generate anything. For example, we pass the prompt as 'Hi' and set stopSequences to 'Hello', that probably make model not generate anything.

Environment
Spring AI 1.0.0-SNAPSHOT, Java 17

Steps to reproduce

Expected behavior
Since 1.0.0-SNAPSHOT is not stable, this case serves as a reminder in case you incorporate the following code snippet into the stable version.
···
return new ChatResponse(List.of(new Generation(((Anthropic3ChatBedrockApi.MediaContent)response.content().get(0)).text())));
···

[maxjiang153]

Hi @ShaunDeng could you provide a demo to reproduce this issue?