[BUG] - When the client sets accept:text/event-stream then response not supported

### Steps to Reproduce

1. produceProcessorMap add init text/event-stream processor.
2. using ProduceJsonProcessor parse respone when text/event-stream request failed.

### Expected Behavior

_No response_

### Servicecomb Version

2.9.0

### Additional Context

_No response_

Start by tracing produceProcessorMap and ProduceJsonProcessor in the response-processing path, then reproduce the failure with an Accept header of text/event-stream on ServiceComb 2.9.0. Done means text/event-stream responses use an appropriate initialized processor instead of being parsed by ProduceJsonProcessor.

Written by the indexing model from the issue text.