[Release/iOS]: HTTPS strict mode interstitial shown at wrong time (pa…

…rtial uplift to 1.69.x) (#25292)

* Fix http-blocked interstitial shown incorrectly.

* Add comment to reset stored https request in didCommit.

ios/brave-ios/Sources/Brave/Frontend/Browser/BrowserViewController/BVC+WKNavigationDelegate.swift

@@ -957,6 +957,9 @@ extension BrowserViewController: WKNavigationDelegate {
   public func webView(_ webView: WKWebView, didCommit navigation: WKNavigation!) {
     guard let tab = tab(for: webView) else { return }
 
+    // Reset the stored http request now that load has committed.
+    tab.upgradedHTTPSRequest = nil
+
     // Set the committed url which will also set tab.url
     tab.committedURL = webView.url