fix: Prevent account transfer charges when no savings account is linked (#2364)

- Added getter to check if a savings account is linked (loansSavingsAccountLinked).
- Filtered out charges with 'Account transfer' payment mode when no savings account is linked.

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

@@ -53,6 +53,7 @@
         [loansAccountProductTemplate]="loansAccountProductTemplate"
         [loansAccountTemplate]="loansAccountTemplate"
         [loansAccountFormValid]="loansAccountFormValid"
+        [loansSavingsAccountLinked]="loansSavingsAccountLinked"
       >
       </mifosx-loans-account-charges-step>
     </mat-step>

src/app/loans/create-loans-account/create-loans-account.component.ts

@@ -119,6 +119,10 @@ export class CreateLoansAccountComponent {
     return this.loansAccountDetailsForm.valid && this.loansAccountTermsForm.valid;
   }
 
+  get loansSavingsAccountLinked() {
+    return this.loansAccountDetailsStep.loansAccountDetailsForm.get('linkAccountId').value;
+  }
+
   /** Gets principal Amount */
   get loanPrincipal() {
     return this.loansAccountTermsStep.loansAccountTermsForm.value.principal;