fix: Phishing page metrics (#28364)

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## **Related issues**

Fixes:
https://github.com/orgs/MetaMask/projects/103/views/1?pane=issue&itemId=86413189

## **Manual testing steps**

See Issue attached in Related Issues.

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---------

Co-authored-by: AugmentedMode <31675118+AugmentedMode@users.noreply.github.com>

app/scripts/background.js

@@ -284,24 +284,27 @@ function maybeDetectPhishing(theController) {
 
       // Determine the block reason based on the type
       let blockReason;
+      let blockedUrl = hostname;
       if (phishingTestResponse?.result && blockedRequestResponse.result) {
         blockReason = `${phishingTestResponse.type} and ${blockedRequestResponse.type}`;
       } else if (phishingTestResponse?.result) {
         blockReason = phishingTestResponse.type;
       } else {
         blockReason = blockedRequestResponse.type;
+        blockedUrl = details.initiator;
       }
 
       theController.metaMetricsController.trackEvent({
         // should we differentiate between background redirection and content script redirection?
         event: MetaMetricsEventName.PhishingPageDisplayed,
         category: MetaMetricsEventCategory.Phishing,
         properties: {
-          url: hostname,
+          url: blockedUrl,
           referrer: {
-            url: hostname,
+            url: blockedUrl,
           },
           reason: blockReason,
+          requestDomain: blockedRequestResponse.result ? hostname : undefined,
         },
       });
       const querystring = new URLSearchParams({ hostname, href });