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/clients/edit-client/contact-otp-block/contact-otp-block.component.ts

@@ -164,6 +164,13 @@ export class ContactOtpBlockComponent implements OnChanges, OnDestroy {
     request$.subscribe({
       next: (res: any) => {
         this.sending = false;
+        // The backend reports failure to actually dispatch the OTP (gateway error, flagged
+        // number, SMTP failure...) as a 200 response with success:false and a real reason in
+        // `message` — never a thrown error. Surface that reason instead of treating it as sent.
+        if (res?.success === false) {
+          this.errorMessage = res?.message || 'Could not send OTP.';
+          return;
+        }
         this.otpId = res?.otpId ?? res?.resourceId ?? null;
         this.otpSent = true;
         this.clearAllDigits();