SDK-31 Fix full-position IAM safe area handling

Apply safe area insets to WKWebView scrollView content for full-position
in-app messages. This ensures content is not hidden behind notch, status
bar, or home indicator while maintaining edge-to-edge background coverage.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: sumchattering

swift-sdk/Internal/IterableHtmlMessageViewController.swift

@@ -227,13 +227,23 @@ class IterableHtmlMessageViewController: UIViewController {
         let parentPosition = ViewPosition(width: view.bounds.width,
                                           height: view.bounds.height,
                                           center: view.center)
+        let safeAreaInsets = InAppCalculations.safeAreaInsets(for: view)
         IterableHtmlMessageViewController.calculateWebViewPosition(webView: webView,
-                                                                   safeAreaInsets: InAppCalculations.safeAreaInsets(for: view),
+                                                                   safeAreaInsets: safeAreaInsets,
                                                                    parentPosition: parentPosition,
                                                                    paddingLeft: CGFloat(parameters.padding.left),
                                                                    paddingRight: CGFloat(parameters.padding.right),
                                                                    location: location)
             .onSuccess { [weak self] position in
+                // Apply safe area insets to scrollView content for full position
+                // This keeps the webView covering the full screen (edge-to-edge background)
+                // while ensuring content is not hidden behind notch or home indicator
+                if self?.location == .full {
+                    self?.webView.set(contentInset: safeAreaInsets)
+                } else {
+                    self?.webView.set(contentInset: .zero)
+                }
+
                 if animate {
                     self?.animateWhileEntering(position)
                 } else {

swift-sdk/Internal/Utilities/WebViewProtocol.swift

@@ -17,6 +17,7 @@ protocol WebViewProtocol {
     @discardableResult func loadHTMLString(_ string: String, baseURL: URL?) -> WKNavigation?
     func set(position: ViewPosition)
     func set(navigationDelegate: WKNavigationDelegate?)
+    func set(contentInset: UIEdgeInsets)
     func layoutSubviews()
     func calculateHeight() -> Pending<CGFloat, IterableError>
 }
@@ -39,7 +40,11 @@ extension WKWebView: WebViewProtocol {
     func set(navigationDelegate: WKNavigationDelegate?) {
         self.navigationDelegate = navigationDelegate
     }
-    
+
+    func set(contentInset: UIEdgeInsets) {
+        scrollView.contentInset = contentInset
+    }
+
     func calculateHeight() -> Pending<CGFloat, IterableError> {
         let fulfill = Fulfill<CGFloat, IterableError>()
 

tests/common/MockWebView.swift

@@ -22,15 +22,20 @@ class MockWebView: WebViewProtocol {
     }
 
     func set(navigationDelegate _: WKNavigationDelegate?) {}
-    
+
+    func set(contentInset: UIEdgeInsets) {
+        self.contentInset = contentInset
+    }
+
     func layoutSubviews() {}
 
     func calculateHeight() -> Pending<CGFloat, IterableError> {
         Fulfill<CGFloat, IterableError>(value: height)
     }
 
     var position: ViewPosition = ViewPosition()
-    
+    var contentInset: UIEdgeInsets = .zero
+
     private var height: CGFloat
 
     init(height: CGFloat) {