Not apply "Search full LDAP directory" permission to ldap service user

[StafLoker]

Describe the bug
LDAP Access result: ldap_bind: Insufficient access (50)

Similar issue: #14518

To Reproduce

1. Configure ldap-outpost
2. ldapsearch -LL -x -H ${LDAP_HOST} -D "${LDAP_READONLY_BIND_DN}" -b "${LDAP_USER_BASE_DN}" -w ${LDAP_PASSWORD} ${FILTER_USER}
   ldap_bind: Insufficient access (50)
3. See error

Expected behavior
ldapsearch prints result

Screenshots

Logs

Login successful:

{
    "outpost": {
        "instance": {
            "pk": "37ec60c723374782b5b18a9fe593a936",
            "app": "authentik_outposts",
            "name": "authentik LDAP",
            "model_name": "outpost"
        }
    },
    "auth_method": "token",
    "http_request": {
        "args": {
            "goauthentik.io/outpost/ldap": "true"
        },
        "path": "/api/v3/flows/executor/ldap-authentication-flow/",
        "method": "GET",
        "request_id": "cf4f2cf035ef49a4af00371982350189",
        "user_agent": "goauthentik.io/outpost/2025.4.1"
    },
    "auth_method_args": {
        "token": {
            "pk": "5786d3c126fc499eb09bd5a370cd1528",
            "app": "authentik_core",
            "name": "service-account-ldapservice-password",
            "model_name": "token"
        }
    }

Version and Deployment (please complete the following information):

• authentik version: 2025.4.1
• Deployment: docker-compose

Additional context
I can see output information of ldapsearch for admin (root) user but for ldap have permission problem. First time was resolved putting OU=goauthentik.io/service-accounts but now it not useful. Problem return when I rebooted server.

ldapsearch -x -H ldap://127.0.0.1:389 -D 'cn=ldapservice,ou=goauthentik.io/service-accounts,DC=ldap,DC=po*****,DC=casa' -w '<token>' -b 'DC=ldap,DC=po*******,DC=casa' '(objectClass=user)'

ldapsearch -x -H ldap://127.0.0.1:389 -D 'cn=ldapservice,ou=users,DC=ldap,DC=po*****,DC=casa' -w '<token>' -b 'DC=ldap,DC=po*****,DC=casa' '(objectClass=user)'