Allow `.htaccess` customization and keep changes on updates

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

.htaccess customization lost after every update

Steps to reproduce

1. get notification about new version, login in my NC web as admin and check
2. run in server console 'sudo -u www-data php /var/www-nextcloud/updater/updater.phar'
3. update goes smooth and ends "Update of code successful" and then runs "occ upgrade", which ends with "Update successful"
4. but then I get 500. error, because setup deletes '.htaccess' customization:

<FilesMatch .php>
# Apache 2.4.10+ can proxy to unix socket
SetHandler "proxy:unix:/var/run/php/php8.3-fpm.sock|fcgi://localhost/"

which is BELLOW:

DO NOT CHANGE ANYTHING ABOVE THIS LINE

default PHP on server is 8.4, which is not yet supported

after re-adding my '.htaccess' customization, NC runs great

Expected behavior

anything bellow

DO NOT CHANGE ANYTHING ABOVE THIS LINE

remains in .htaccess

Nextcloud Server version

30

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.3

Web server

Apache (supported)

Database engine version

MariaDB

Is this bug present after an update or on a fresh install?

Updated from a MINOR version (ex. 32.0.1 to 32.0.2)

Are you using the Nextcloud Server Encryption module?

None

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

sudo -u www-data php occ config:list system
{
    "system": {
        "auth.bruteforce.protection.enabled": true,
        "force_language": "en",
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "nextcloud.ieleja.lv"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "overwrite.cli.url": "https:\/\/nextcloud.ieleja.lv",
        "dbtype": "mysql",
        "version": "30.0.7.2",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "memcache.local": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 6379
        },
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "updater.release.channel": "stable",
        "maintenance": false,
        "ldapIgnoreNamingRules": false,
        "ldapProviderFactory": "\\OCA\\User_LDAP\\LDAPProviderFactory",
        "theme": "",
        "loglevel": 3,
        "mail_smtpmode": "smtp",
        "mail_sendmailmode": "smtp",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mysql.utf8mb4": true,
        "default_phone_region": "LV",
        "maintenance_window_start": 1
    }
}

List of activated Apps

sudo -u www-data php occ app:list
Enabled:
  - activity: 3.0.0
  - app_api: 4.0.6
  - calendar: 5.1.3
  - circles: 30.0.0
  - cloud_federation_api: 1.13.0
  - comments: 1.20.1
  - contactsinteraction: 1.11.0
  - cookbook: 0.11.3
  - dashboard: 7.10.0
  - dav: 1.31.1
  - federatedfilesharing: 1.20.0
  - federation: 1.20.0
  - files: 2.2.0
  - files_downloadlimit: 3.0.0
  - files_pdfviewer: 3.0.0
  - files_reminders: 1.3.0
  - files_sharing: 1.22.0
  - files_trashbin: 1.20.1
  - files_versions: 1.23.0
  - firstrunwizard: 3.0.0
  - logreader: 3.0.0
  - lookup_server_connector: 1.18.0
  - nextcloud_announcements: 2.0.0
  - notes: 4.11.0
  - notifications: 3.0.0
  - oauth2: 1.18.1
  - password_policy: 2.0.0
  - photos: 3.0.2
  - privacy: 2.0.0
  - provisioning_api: 1.20.0
  - recommendations: 3.0.0
  - related_resources: 1.5.0
  - serverinfo: 2.0.0
  - settings: 1.13.0
  - sharebymail: 1.20.0
  - support: 2.0.0
  - survey_client: 2.0.0
  - systemtags: 1.20.0
  - tasks: 0.16.1
  - text: 4.1.0
  - theming: 2.6.0
  - twofactor_backupcodes: 1.19.0
  - updatenotification: 1.20.0
  - user_status: 1.10.0
  - viewer: 3.0.0
  - weather_status: 1.10.0
  - webhook_listeners: 1.1.0-dev
  - workflowengine: 2.12.0
Disabled:
  - admin_audit: 1.20.0
  - audioplayer: 3.4.1 (installed 3.4.1)
  - bruteforcesettings: 3.0.0 (installed 2.4.0)
  - encryption: 2.18.0
  - facerecognition: 0.9.60 (installed 0.9.60)
  - files_external: 1.22.0
  - files_rightclick: 0.15.1 (installed 1.6.0)
  - keeweb: 0.6.20 (installed 0.6.20)
  - recognize: 8.2.0 (installed 8.2.0)
  - suspicious_login: 8.0.0
  - twofactor_nextcloud_notification: 4.0.0
  - twofactor_totp: 12.0.0-dev
  - user_ldap: 1.21.0 (installed 1.21.0)

Nextcloud Signing status

No errors have been found.

Nextcloud Logs

there are not entries in LOGs about .htaccess

Additional info

No response

Start by reproducing the update with updater/updater.phar and inspect how the .htaccess file is handled before and during occ upgrade. Compare the expected preservation of content below "DO NOT CHANGE ANYTHING ABOVE THIS LINE" with the current result; done means the customization survives a minor update without causing the reported Apache/PHP 500 error.