Can't search calendar by username

Steps to reproduce

1.Choose to search by email address, users, and contacts
2.
3.

Expected behavior

Searches by username and email

Actual behaviour

Search is performed by email only, username@domain.com

Calendar app version

3.4.0

CalDAV-clients used

No response

Browser

Google Chrome 102.0.5005.61

Client operating system

Arch Linux

Server operating system

Oracle 8

Web server

Nginx

Database engine version

MariaDB

PHP engine version

PHP 7.4

Nextcloud version

24.0.2

Updated from an older installed version or fresh install

Fresh install

List of activated apps

Enabled:
  - accessibility: 1.10.0
  - activity: 2.16.0
  - calendar: 3.4.0
  - circles: 24.0.0
  - cloud_federation_api: 1.7.0
  - comments: 1.14.0
  - contactsinteraction: 1.5.0
  - dav: 1.22.0
  - deck: 1.7.1
  - event_update_notification: 1.5.0
  - federatedfilesharing: 1.14.0
  - federation: 1.14.0
  - files: 1.19.0
  - files_rightclick: 1.3.0
  - files_sharing: 1.16.2
  - files_trashbin: 1.14.0
  - files_versions: 1.17.0
  - firstrunwizard: 2.13.0
  - ldap_contacts_backend: 1.2.0
  - logreader: 2.9.0
  - lookup_server_connector: 1.12.0
  - nextcloud_announcements: 1.13.0
  - notes: 4.3.1
  - notifications: 2.12.0
  - oauth2: 1.12.0
  - password_policy: 1.14.0
  - privacy: 1.8.0
  - provisioning_api: 1.14.0
  - recommendations: 1.3.0
  - richdocuments: 6.1.0
  - richdocumentscode: 21.11.402
  - serverinfo: 1.14.0
  - settings: 1.6.0
  - sharebymail: 1.14.0
  - spreed: 14.0.2
  - support: 1.7.0
  - survey_client: 1.12.0
  - systemtags: 1.14.0
  - text: 3.5.1
  - theming: 1.15.0
  - twofactor_backupcodes: 1.13.0
  - updatenotification: 1.14.0
  - user_ldap: 1.14.1
  - user_status: 1.4.0
  - viewer: 1.8.0
  - weather_status: 1.4.0
  - workflowengine: 2.6.0

Nextcloud configuration

{
    "system": {
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "x.x.x.x",
            "cloud.domain"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "24.0.2.1",
        "overwrite.cli.url": "https:\/\/cloud.domain",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "memcache.local": "\\OC\\Memcache\\APCu",
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 6379
        },
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "app_install_overwrite": [
            "ldapcontacts",
            "ldap_contacts_backend"
        ],
        "maintenance": false,
        "updater.secret": "***REMOVED SENSITIVE VALUE***",
        "theme": "",
        "loglevel": 2,
        "ldapProviderFactory": "OCA\\User_LDAP\\LDAPProviderFactory"
    }
}

Web server error log

No response

Log file

No response

Browser log

No response

Additional info

No response

No source file or test is named in the report. Start by reproducing the issue in the Calendar app with a username and email search on the listed versions, then trace the search entry point and add coverage showing that username and email both work; done means username searches return the expected users.