[MM-57942] Fix a panic on password is too long (#27449)

* return error from bcrypt, handle gracefully; remove dead code

* linting

* linting

* i18n

* fix test

* fill out translations

server/public/model/user_test.go

@@ -9,6 +9,8 @@ import (
 	"strings"
 	"testing"
 
+	"golang.org/x/crypto/bcrypt"
+
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
@@ -47,12 +49,19 @@ func TestUserDeepCopy(t *testing.T) {
 
 func TestUserPreSave(t *testing.T) {
 	user := User{Password: "test"}
-	user.PreSave()
+	err := user.PreSave()
+	require.Nil(t, err)
 	user.Etag(true, true)
 	assert.NotNil(t, user.Timezone, "Timezone is nil")
 	assert.Equal(t, user.Timezone["useAutomaticTimezone"], "true", "Timezone is not set to default")
 }
 
+func TestUserPreSavePwdTooLong(t *testing.T) {
+	user := User{Password: strings.Repeat("1234567890", 8)}
+	err := user.PreSave()
+	assert.ErrorIs(t, err, bcrypt.ErrPasswordTooLong)
+}
+
 func TestUserPreUpdate(t *testing.T) {
 	user := User{Password: "test"}
 	user.PreUpdate()