Update samples to use large ad size

PiperOrigin-RevId: 866176820

Author: malandr2

Objective-C/advanced/APIDemo/APIDemo/CollapsibleBannerViewController.m

@@ -54,7 +54,7 @@ - (void)viewDidAppear:(BOOL)animated {
   // view has been laid out.
   CGRect frame = UIEdgeInsetsInsetRect(self.view.frame, self.view.safeAreaInsets);
   CGFloat viewWidth = frame.size.width;
-  GADAdSize adSize = GADCurrentOrientationAnchoredAdaptiveBannerAdSizeWithWidth(viewWidth);
+  GADAdSize adSize = GADLargeAnchoredAdaptiveBannerAdSizeWithWidth(viewWidth);
   _bannerView.adSize = adSize;
 
   [self loadAd];

Swift/advanced/APIDemo/APIDemo/CollapsibleBannerViewController.swift

@@ -48,7 +48,7 @@ class CollapsibleBannerViewController: UIViewController, BannerViewDelegate {
       return view.frame.inset(by: view.safeAreaInsets)
     }()
     let viewWidth = frame.size.width
-    bannerView.adSize = currentOrientationAnchoredAdaptiveBanner(width: viewWidth)
+    bannerView.adSize = largeAnchoredAdaptiveBanner(width: viewWidth)
 
     loadAd()
   }

Swift/advanced/SwiftUIDemo/SwiftUIDemo/Banner/BannerContentView.swift

@@ -8,7 +8,7 @@ struct BannerContentView: View {
   var body: some View {
     Spacer()
     // Request an anchored adaptive banner with a width of 375.
-    let adSize = currentOrientationAnchoredAdaptiveBanner(width: 375)
+    let adSize = largeAnchoredAdaptiveBanner(width: 375)
     BannerViewContainer(adSize)
       .frame(width: adSize.size.width, height: adSize.size.height)
       // [START_EXCLUDE silent]