The initial problem here is that as of Drupal 10.2 (or even earlier?), the delete entity operations on entity list builders are using ajax links, which open the delete confirm step inside an ajax dialog. The code altering the delete forms in \Drupal\wse\Core\EntityOperations::entityFormAlter is just denying access to the form, which in case of these ajax dialogs will cause the confirm form in the dialog to appear empty.
The delete operation link shouldn't be displayed accessible at all in such cases which would be consistent to the entity delete access which calls \Drupal\wse\Core\WorkspaceInformation::isEntityDeletable().
There's also some discrepancy between what \Drupal\wse\WseDeleteAction::access() is doing and the isEntityDeletable() method, but the underlying check should be the same.
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