fix(shares): mandatory GL+voucher entry for advance collection, split entry-fee verification from settlement

- Apply Collection dialog: replace product-config auto-resolved GL account with a required GL +
  voucher search (mirrored for Share and Entry Fee receipts). The entry-fee receipt is tracked
  separately from the share receipts and sent as its own field so its amount is never swept into the
  Sundry-side total or double-posted — it only verifies the fee was paid, since that money already
  sits wherever the cashier deposited it.
- Shows the account's required total (share value + entry fee) and live coverage up front, instead of
  only after a failed apply.
- Apply Additional Shares: same mandatory GL + voucher pattern for its by-voucher lookup, plus a GL
  account picker fed by the new /shareadvancecollection/glaccounts endpoint.
- shares-account-charges-step: fixed a race where the currency-control subscription (meant only for
  the edit-an-existing-application flow) wiped out product charges that ngOnChanges had just seeded
  from the same product-selection event, leaving new accounts with no charges.
- shares-account-view: hide "Share Certificate" until collection_applied is true, so a certificate
  can't be printed for shares nobody has actually paid for yet.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/app/shares/shares-account-view/shares-account-view.component.ts

@@ -158,6 +158,13 @@ export class SharesAccountViewComponent implements OnInit {
         this.buttonConfig.removeButton('Approve Additional Shares');
         this.buttonConfig.removeButton('Reject Additional Shares');
       }
+      // An Active account can carry "approved" shares nobody has actually paid for yet -- account
+      // creation, approval and activation post no GL of their own; only applying a Share Advance
+      // Collection does (see isSettled). A certificate for shares still unsettled would certify
+      // capital that was never issued.
+      if (!this.isSettled) {
+        this.buttonConfig.removeOption('Share Certificate');
+      }
     }
   }