Retry ClientException from package:http

[jonasfj]

We should probably also retry ClientException from package:http:

pub-dev/app/lib/shared/storage.dart

Lines 142 to 154 in 031c368

	retryIf: (e) {
	if (e is TimeoutException) {
	return true; // Timeouts we can retry
	}
	if (e is IOException) {
	return true; // I/O issues are worth retrying
	}
	if (e is DetailedApiRequestError) {
	final status = e.status;
	return status == null || status >= 500; // 5xx errors are retried
	}
	return e is ApiRequestError; // Unknown API errors are retried
	},