Digital ACT-191 ONEAPP-9314 story: price optional and may have nil

VDSSample/ViewControllers/PriceLockupViewController.swift

@@ -82,8 +82,11 @@ class PriceLockupViewController: BaseViewController<PriceLockup> {
         priceTextField
             .numberPublisher
             .sink { [weak self] number in
-                guard let number else { return }
-                self?.component.price = number.floatValue
+                if let number {
+                    self?.component.price = number.floatValue
+                } else {
+                    self?.component.price = nil
+                }
             }.store(in: &subscribers)
         
         leadingTextField