Add unit tests for RBAC#20785

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WarLikeLaux wants to merge 3 commits intoyiisoft:masterfrom

WarLikeLaux:add-rbac-tests

Commits on Mar 7, 2026

Fix trailing space in `PhpManager::addChild()` exception message
WarLikeLaux
committed
Add RBAC tests for `BaseManager`, `PhpManager`, and `DbManager`
WarLikeLaux
committed
Fix `ResourceCommand` for PostgreSQL bytea columns
WarLikeLaux
committed