Recorder has not yet been created or has already been disposed

[SELiOTe]

Package version

record: ^5.1.2

Environment

Development: MacOS 14.5
Debug Device: iOS 15.7

Describe the bug

I have a Button, it will call start or stop record when tap, and it will execute those code

Future<void> _startRecord() async {
  if (!await _audioRecorder.hasPermission()) {
    if (mounted) {
      AppLocalizations.of(context)!.audioRecordWithoutPermission;
    }
    return;
  }
  _recordContentBuilder = BytesBuilder();
  var stream = await _audioRecorder
      .startStream(const RecordConfig(encoder: AudioEncoder.pcm16bits));
  stream.listen((data) async {
    _recordContentBuilder?.add(data.toList());
  });
  _audioRecorder
      .onAmplitudeChanged(const Duration(milliseconds: 100))
      .listen((amplitude) {
    _audioWaveStreamController.sink.add(amplitude.current);
  });
}

Future<void> _stopRecording() async {
  if (!await _audioRecorder.isRecording()) {
    return;
  }
  await _audioRecorder.stop();
  _recordStartTime = null;
  _timer?.cancel();
  _timer = null;
  if (mounted) {
    Navigator.of(context).pop(_recordContentBuilder!.toBytes());
  }
}

when I click this button very quickly, it will continue raise many exception like this

...
[ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: PlatformException(record, Recorder has not yet been created or has already been disposed., null, null)
#0      StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:648:7)
#1      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:334:18)
<asynchronous suspension>
#2      RecordMethodChannel.isRecording (package:record_platform_interface/src/record_method_channel.dart:40:20)
<asynchronous suspension>
#3      AudioRecorder._updateAmplitudeAtInterval.shouldUpdate (package:record/src/record.dart:210:24)
<asynchronous suspension>
#4      AudioRecorder._updateAmplitudeAtInterval (package:record/src/record.dart:213:9)
<asynchronous suspension>
[ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: PlatformException(record, Recorder has not yet been created or has already been disposed., null, null)
#0      StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:648:7)
#1      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:334:18)
<asynchronous suspension>
#2      RecordMethodChannel.isRecording (package:record_platform_interface/src/record_method_channel.dart:40:20)
<asynchronous suspension>
#3      AudioRecorder._updateAmplitudeAtInterval.shouldUpdate (package:record/src/record.dart:210:24)
<asynchronous suspension>
#4      AudioRecorder._updateAmplitudeAtInterval (package:record/src/record.dart:213:9)
<asynchronous suspension>
...

[SELiOTe]

Repeated clicks cause _startRecord to enter multiple executions repeatedly. Add a state to avoid this. Thank you to the author.