fix(sarvam-tts): add keepalive ping and stale connection detection to prevent audible silence#4971

sanskar1104srivastava wants to merge 4 commits intolivekit:mainlivekit/agents:mainfrom

sanskar1104srivastava:fix/sarvam-tts-ws-stale-connection-keepalivesanskar1104srivastava/agents:fix/sarvam-tts-ws-stale-connection-keepaliveCopy head branch name to clipboard