Register button instead of Open in Policies

### Problem description
This label came with new UI. It is hardcoded value for SR - “Register” and USER - “Open” or “Dry run”

### Expected behaviour
we should make everything say "open"

### Actual behaviour
As a Standard Registry user and I want to "Open" a Policy after publishing, the button label says "Register" instead of "Open"

Start by searching the new UI for the hardcoded policy button labels described in this issue, including the Standard Registry flow after publishing. Confirm the button reads "Open" rather than "Register" for Standard Registry users, while preserving the expected behavior for other user types.

Written by the indexing model from the issue text.