Spring-ai fix: Improve error resilience of the Bedrock stream handling

The changes include:

• Refactor the emitting of next, error, and complete events in the Bedrock stream handling to use a default EmitFailureHandler that retries for 10 seconds before failing. This helps improve the error resilience of the stream processing.
• Disable a couple of integration tests related to the COHERE_COMMAND_V14 model, as that model version is no longer supported.
• Adjust some configuration options in the Jurassic2 chat model integration test.

Also resolves #1679

Comment From: ilayaperumalg

LGTM, merging.