fix: tenant-config fixes, cashier/share/savings UI bugs, and menu-access hardcoding

- Add Balance Sheet report and disabled-features accounting config
- Point menu-access tenant header and env.js/environment.ts tenant identifier
  at env config instead of hardcoded 'default'/'lincpay' literals
- Surface the real backend error (not a generic "no reference id") when an
  OTP send fails in contact-otp-block
- Fix branch-day "₹null" display bug (null vs undefined) and add a guard
  blocking a branch's first-ever day open before cash denomination migration
- Dynamically size the denomination count input and block re-opening an
  already-open business day from Migrate Cash Denomination
- Lock the denomination-managed cash GL row in Migrate Opening Balances
  (read-only, with a link back to Migrate Cash Denomination)
- Remove duplicate Cancel/Submit action bars on the Share Product and
  Savings Account creation preview steps; align Previous into the same row
- Hide "Apply Collection" on a share account once its advance collection
  is already settled (further purchases go through Apply Additional Shares)

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

src/app/savings/create-savings-account/create-savings-account.component.html

@@ -91,16 +91,10 @@
             [savingsAccountNominees]="savingsAccountCurrencyStep?.nominees ?? []"
             [submitting]="submitting"
             (submitEvent)="submit()"
+            (previousEvent)="prev()"
           >
           </mifosx-savings-account-preview-step>
         }
-
-        <div class="csa-actions">
-          <button mat-stroked-button (click)="prev()">
-            <fa-icon icon="arrow-left" class="m-r-10"></fa-icon>
-            {{ 'labels.buttons.Previous' | translate }}
-          </button>
-        </div>
       </div>
     </mat-tab>
   </mat-tab-group>