fix: handle empty strings after event removal in transcription processing (...

TnR2

2025-10-01 528f92f7a2a26cade1c57ccf26b0ba6524e7cae5

 funasr/models/llm_asr/__init__.py

copy from funasr/models/whisper/utils/__init__.py
copy to funasr/models/llm_asr/__init__.py