[health] Fixed SleepSessionRecord stage error

[thegamenicorus]

Step to reproduce:

HealthFactory health = HealthFactory(
  useHealthConnectIfAvailable: true,
);

var sleepDataHC = await health.getHealthDataFromTypes(
      sleepStart,
      sleepEnd,
      [
        HealthDataType.SLEEP_SESSION,
      ],
    );

Result:

 java.lang.IllegalArgumentException: Unsupported value: 'androidx.health.connect.client.records.SleepSessionRecord$Stage@c063c16c' of type 'class androidx.health.connect.client.records.SleepSessionRecord$Stage'

[bardram]

Has been added to the upcoming 10.0.0 release. Thx.