Bandaid fix for missing PaymentSheet loading -> loaded animation. (#1390

)

Long-term fix is to revert this commit, add `animated: Bool` params to SectionContainerView, AddressSection, etc., and make the `updateBillingSameAsShippingDefaultAddress` call in `AddPaymentMethodViewController.willAppear` pass `animated: false`. If it animates during viewWillAppear, the view controller presentation animation becomes glitchy.

Stripe/BottomSheetViewController.swift

@@ -84,7 +84,7 @@ class BottomSheetViewController: UIViewController, BottomSheetPresentable {
             }
             self.contentContainerView.layoutIfNeeded()
 
-            animateHeightChange()
+            animateHeightChange(forceAnimation: true)
             // Add its navigation bar if necessary
             oldContentViewController.navigationBar.removeFromSuperview()
             navigationBarContainerView.addArrangedSubview(contentViewController.navigationBar)

StripeUICore/StripeUICore/Source/Categories/UIViewController+StripeUICore.swift

@@ -9,9 +9,9 @@ import UIKit
 
 @_spi(STP) public extension UIViewController {
     /// Use this to animate changes that affect the height of the sheet
-    func animateHeightChange(duration: CGFloat = 0.5, _ animations: (() -> Void)? = nil, completion: ((Bool) -> Void)? = nil)
+    func animateHeightChange(forceAnimation: Bool = false, duration: CGFloat = 0.5, _ animations: (() -> Void)? = nil, completion: ((Bool) -> Void)? = nil)
     {
-        guard !isBeingPresented else {
+        guard forceAnimation || !isBeingPresented else {
             animations?()
             return
         }