Geraldo Julio Anchieta Neto . I added custom permission
And here is custon action code for Speech to text. and remember when user using app need to accept that request permission too. You can test on my Chativon app : https://apps.apple.com/us/app/ai-friend-chat-fun-chativon/id6449495972

Here the custom I use.

speech_to_text: ^6.1.1

import 'dart:async';\nimport 'package:speech_to_text/speech_recognition_error.dart';\nimport 'package:speech_to_text/speech_recognition_result.dart';\nimport 'package:speech_to_text/speech_to_text.dart';\n\nFuture speechToText() async {\n  String output = '';\n  bool _onDevice = false;\n  final TextEditingController _pauseForController =\n      TextEditingController(text: '3');\n  final TextEditingController _listenForController =\n      TextEditingController(text: '30');\n  double minSoundLevel = 50000;\n  double maxSoundLevel = -50000;\n  String _currentLocaleId = '';\n  final SpeechToText speech = SpeechToText();\n\n  bool isInitialized = await speech.initialize();\n\n  if (isInitialized) {\n    var systemLocale = await speech.systemLocale();\n    _currentLocaleId = systemLocale?.localeId ?? '';\n    final pauseFor = int.tryParse(_pauseForController.text);\n    final listenFor = int.tryParse(_listenForController.text);\n\n    speech.listen(\n      onResult: (result) {\n        if (!result.finalResult) {\n          FFAppState().update(() {\n            FFAppState().btnTalk = 'listening...';\n            FFAppState().stt = '${result.recognizedWords}';\n          });\n        } else {\n          FFAppState().update(() {\n            output = '${result.recognizedWords}';\n            FFAppState().sstSendText = '${result.recognizedWords}';\n            FFAppState().btnTalk = 'Talk';\n          });\n        }\n      },\n      // try to turn it off to test\n      listenFor: Duration(seconds: listenFor ?? 30),\n      pauseFor: Duration(seconds: pauseFor ?? 3),\n      partialResults: true,\n      localeId: _currentLocaleId,\n      onSoundLevelChange: (level) {\n        minSoundLevel = min(minSoundLevel, level);\n        maxSoundLevel = max(maxSoundLevel, level);\n        print('sound level $level: $minSoundLevel - $maxSoundLevel ');\n        level = level;\n      },\n      cancelOnError: true,\n      listenMode: ListenMode.confirmation,\n      onDevice: _onDevice,\n    );\n  }\n}

I has issue with deploy to iOS, after deploy success, I see notification from Connect app of Apple for new build version, but no build in testflight