[BUG FIX]Completing party name check blocks BCeID clients on firm registrations

The completing party name validation added under #34553 compares the submitted name against the lear users row, which for BCeID logins holds the BCeID display name in firstname (e.g. "Nevneet Goodman") with no lastname, while the UI pre-fills the completing party from the editable auth profile name (e.g. "Neeta Goodman"). These two sources never reconcile, so BCeID clients get "Completing party name must match the name of the logged in user" on every firm registration and change of registration and cannot proceed since the field is non-editable for clients.

Under the expected business workflow staff always authenticate through IDIR and clients through BC Services Card, and a BCeID login is never used for staff filings, so skipping the name validation for BCeID clients is the desired behaviour