bug: incorrect position replaced

[IAD]

Describe the bug

version: 1.6.9
test:

import (
	"testing"

	goaway "github.com/TwiN/go-away"
	"github.com/stretchr/testify/require"
)

func TestDefaultDriver_AR_4768(t *testing.T) {
	detector := goaway.NewProfanityDetector().WithCustomDictionary(
		[]string{"anal", "babi"}, // profanities
		[]string{"babibu"},       // falsePositives
		[]string{"babibube"},     // falseNegatives
	)

	message := "message with old anal new babi falsePositive babibu falseNegative babibube"
	expected := "message with old **** new **** falsePositive babibu falseNegative ********"

	isProfane := detector.IsProfane(message)
	require.True(t, isProfane)

	censored := detector.Censor(message)
	require.Equal(t, expected, censored)

	/*
		Original :message with old anal new babi falsePositive babibu falseNegative babibube
		Expected :message with old **** new **** falsePositive babibu falseNegative ********
		Actual   :message with old anal ne* ***i fa****ositive babibu falseNegative ********
	*/
}

What do you see?

message with old **** new **** falsePositive babibu falseNegative ********

What do you expect to see?

message with old **** new **** falsePositive babibu falseNegative ********

List the steps that must be taken to reproduce this issue

use the test from the description

Version

v1.6.9

Additional information

No response