[BUG] TTS bug@voice_assistant@default

Description

sometimes it doesn't complete speaking all parts of the sentences of an AI answer. instead, it just speaks the first 1-2 parts.

in the attached example, it just spoke: "我没有实时天气数据". but it didn't continue to speak the following part "但你可以用手机上的天气应用查看明天的天气预报，或者在网上搜索一下当地的气象信息。这样就能知道是否需要带伞或穿得暖和一点啦！"

although it shows in the container console that all parts have been sent to the TTS service as the attachment shows.

this may not be a bug of TTS but of the playing TTS responses in the the event loops.

Environment

any

Steps to reproduce

example/default
task use
task run
open the playground
connect
ask a question
sometimes it doesn't complete speaking all parts of the answer sentences. instead, it just speaks the first 1-2 parts.

Expected behavior

it should speak all parts of the whole sentences of an AI answer.

Severity

Major

Additional Information

No response

Start with the example/default task, run it with task run, and reproduce the interruption in the playground after connecting and asking a question. Inspect the TTS service handoff and event-loop playback path mentioned in the report. Done means every part of an AI answer is spoken reliably, rather than only the first one or two parts.