[Bug]: Share-Link Creation-Form Expiration-Date Datepicker displays wrong Default-Value

⚠️ 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

If you set the link_defaultExpDays / internal_defaultExpDays to a value (lets say 7) and set the shareapi_expire_after_n_days to 30,
the Front-End sets the day in 30 days as the default-value of the Datepicker while creating a new Share-Link.

Maybe an issue with the default-value of the Picker?
https://github.com/nextcloud/server/blob/2e10c9431068c43432a496d607667b0595c6cdae/apps/files_sharing/src/components/SharingEntryLink.vue#L495C90-L495C90

I don't know how to pass the configured values to the Front-End, else I would've tried that.

Steps to reproduce

1. Set the default Sharing-Link-Expiration-Value to 30
2. Set link_defaultExpDays and internal_defaultExpDays to 7 as described in the wiki
3. Try to create a new Share-Link in the Web-UI on a File or Directory.
4. See which Date is set as default in the Datepicker of the Expiration.
   It's set in 30 days, not in 7.

Expected behavior

As decribed in the wiki this should enable a default and max situation.
If internal_defaultExpDays and link_defaultExpDays where set to 7 and the shareapi_expire_after_n_days is still 30, the default value should be 7 days and the Share should be configured with a max Expiration-Date in 30 days in the Datepicker.

Installation method

Community Docker image

Nextcloud Server version

28

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.1

Web server

Nginx

Database engine version

MariaDB

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

Upgraded to a MAJOR version (ex. 22 to 23)

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

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

Configuration report

{
    "system": {
        "htaccess.RewriteBase": "\/",
        "memcache.local": "\\OC\\Memcache\\APCu",
        "apps_paths": [
            {
                "path": "\/var\/www\/html\/apps",
                "url": "\/apps",
                "writable": false
            },
            {
                "path": "\/var\/www\/html\/custom_apps",
                "url": "\/custom_apps",
                "writable": true
            }
        ],
        "default_phone_region": "DE",
        "skeletondirectory": "",
        "defaultapp": "files",
        "knowledgebaseenabled": false,
        "allow_user_to_change_display_name": false,
        "lost_password_link": "disabled",
        "trashbin_retention_obligation": "auto, 14",
        "ldapUserCleanupInterval": 30,
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "password": "***REMOVED SENSITIVE VALUE***",
            "port": 6379
        },
        "overwritehost": "ext-cloud.example.de",
        "overwriteprotocol": "https",
        "overwrite.cli.url": "https:\/\/ext-cloud.example.de",
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpmode": "smtp",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpport": "587",
        "mail_smtpsecure": "tls",
        "mail_smtpauth": true,
        "mail_smtpauthtype": "LOGIN",
        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "localhost",
            "ext-cloud.example.de"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "28.0.1.1",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "ldapProviderFactory": "OCA\\User_LDAP\\LDAPProviderFactory",
        "loglevel": 2,
        "maintenance": false
    }
}

List of activated Apps

Enabled:
  - circles: 28.0.0-dev
  - cloud_federation_api: 1.11.0
  - comments: 1.18.0
  - contactsinteraction: 1.9.0
  - dashboard: 7.8.0
  - dav: 1.29.1
  - federatedfilesharing: 1.18.0
  - federation: 1.18.0
  - files: 2.0.0
  - files_pdfviewer: 2.9.0
  - files_reminders: 1.1.0
  - files_sharing: 1.20.0
  - files_trashbin: 1.18.0
  - files_versions: 1.21.0
  - logreader: 2.13.0
  - lookup_server_connector: 1.16.0
  - notifications: 2.16.0
  - oauth2: 1.16.3
  - password_policy: 1.18.0
  - photos: 2.4.0
  - privacy: 1.12.0
  - provisioning_api: 1.18.0
  - recommendations: 2.0.0
  - related_resources: 1.3.0
  - serverinfo: 1.18.0
  - settings: 1.10.1
  - sharebymail: 1.18.0
  - support: 1.11.0
  - systemtags: 1.18.0
  - text: 3.9.1
  - theming: 2.3.0
  - twofactor_backupcodes: 1.17.0
  - user_ldap: 1.19.0
  - user_status: 1.8.1
  - viewer: 2.2.0
  - workflowengine: 2.10.0
Disabled:
  - admin_audit: 1.18.0
  - bruteforcesettings: 2.8.0
  - encryption: 2.16.0
  - files_external: 1.20.0
  - files_rightclick: 0.15.1 (installed 1.6.0)
  - suspicious_login: 6.0.0
  - twofactor_totp: 10.0.0-beta.2

Nextcloud Signing status

No errors have been found.

Nextcloud Logs

No response

Additional info

I think the link_defaultExpDays / internal_defaultExpDays value need to be passed to the Frontend if they are set.
And the Datepicker should display a value calculated by this Config-Values.