Correctly load intercepted URLs (#5107)

Task/Issue URL:
https://app.asana.com/0/1207252092703676/1208500665899984/f

### Description

### Steps to test this PR

_Feature 1_
- [x] Set Duck Player settings to Always enabled
- [x] Open
https://clicks.aweber.com/y/ct/?l=pbFxrn&m=gzpbMhiix7McQMQ&b=cIoUrwlB2qpdga9S7Y8fWQ
- [x] Check Duck Player is launched
- [x] Navigate back
- [x] Check you're taken to the previous page (or the customtab is
closed if the navigation was initiated from an external link)

### UI changes
| Before  | After |
| ------ | ----- |
!(Upload before screenshot)|(Upload after screenshot)|

app/src/main/java/com/duckduckgo/app/browser/BrowserWebViewClient.kt

@@ -184,7 +184,9 @@ class BrowserWebViewClient @Inject constructor(
                         This forces shouldInterceptRequest to be called with the YouTube URL, otherwise that method is never executed and
                         therefore the Duck Player page is never launched if YouTube comes from a redirect.
                          */
-                        webView.loadUrl(url.toString())
+                        webViewClientListener?.let {
+                            loadUrl(it, webView, url.toString())
+                        }
                         return true
                     } else {
                         shouldOverrideWebRequest(url, webView, isForMainFrame)