Add supports_synthesize_streaming=True to TtsProgram

Without this flag HA buffers all audio until AudioStop before forwarding
to the media player. With it, HA streams AudioChunk events to the player
as they arrive, so playback starts on the first chunk rather than after
the full text is synthesized.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

wyoming_voices.py

@@ -95,6 +95,7 @@ def create_wyoming_info(sample_rate: int, voices: Dict[str, str]) -> Info:
                 installed=True,
                 voices=tts_voices,
                 version="1.0",
+                supports_synthesize_streaming=True,
             )
         ]
     )