Regression in 4.x and 5.x. DB-LEVEL triggers can not be created just after CREATE DATABASE, RE-connect is reruired

[pavel-zotov]

None of the following scripts will complete on recent 4.x and 5.x:

create database 'localhost:r:\temp\tmp4test.fdb' user sysdba password 'masterkey';
commit;
--connect 'localhost:r:\temp\tmp4test.fdb' user sysdba password 'masterkey';  --------- [ 1 ]
set term ^;
create trigger trg_commit active on transaction commit as
begin
    -- nop --
end
^

create database 'localhost:r:\temp\tmp4test.fdb' user sysdba password 'masterkey';
commit;
--connect 'localhost:r:\temp\tmp4test.fdb' user sysdba password 'masterkey'; --------- [ 1 ]
set term ^;
create trigger trg_alter_table_before active before ALTER TABLE as
begin
    -- nop --
end
^

Output will be:

Statement failed, SQLSTATE = 28000
unsuccessful metadata update
-CREATE TRIGGER <trg_name> failed
-no permission for ALTER access to DATABASE

If we UNcomment 'CONNECT ...' operator (marked as "[ 1 ]") than both scripts work fine.

3.x and 6.x seems not affected.
On 5.x problem not existed up to 20260720_192642-5.0.5.1868-243c173 and raises in 20260721_100938-5.0.5.1869-04f06fd -- i.e. since

commit 04f06fdca8f52effdc8cc9a8bf24934a2110d314
Author:     ChudaykinAlex <130781208+ChudaykinAlex@users.noreply.github.com>
AuthorDate: Tue Jul 21 11:03:14 2026 +0300
Commit:     Dmitry Yemanov <dyemanov@users.noreply.github.com>
CommitDate: Tue Jul 21 13:09:38 2026 +0300

    Merge commit from fork
    
    * Fix #GHSA-ph3g-gc8r-mjh5: USE_NBACKUP_UTILITY allowed full ALTER DATABASE
    
      SCL_check_database() contained a shortcut that granted any holder of
      USE_NBACKUP_UTILITY permission for all ALTER DATABASE clauses, not just
      backup-related ones (BEGIN/END BACKUP, ADD/DROP DIFFERENCE FILE).
    
      - Remove the shortcut from SCL_check_database() in scl.epp
      - Make AlterDatabaseNode::checkPermission() clause-aware: allow
        USE_NBACKUP_UTILITY only when no non-backup clauses are present
    
    * USE_NBACKUP_UTILITY: require full ALTER DATABASE for difference file

This is URL to 5.x snapshots that can be used to check this issue.