fix: primefaces#14327, Inputnumber: Inputnumber#currency mode not all…

…owing to remove minus sign for Dollar and INR fields.

src/app/components/inputnumber/inputnumber.ts

@@ -873,6 +873,8 @@ export class InputNumber implements OnInit, AfterContentInit, OnChanges, Control
                         } else {
                             newValueStr = inputValue.slice(0, selectionStart - 1) + inputValue.slice(selectionStart);
                         }
+                    } else if (this.mode === 'currency' && deleteChar.search(this._currency) != -1) {
+                        newValueStr = inputValue.slice(1);
                     }
 
                     this.updateValue(event, newValueStr, null, 'delete-single');