Only show DBP for US users (#1792)

Task/Issue URL:
https://app.asana.com/0/72649045549333/1205660000891177/f
Tech Design URL:
https://app.asana.com/0/1204586965688315/1205744067595006/f
CC:

**Description**:
This PR gates DBP for US users only

**Steps to test this PR**:
1. Make sure your locale is set to the US. "Private Information Removal"
should show in the more menu
2. Set your locale to another country (or flip the `==` to `!=`).
"Private Information Removal" should *not* show in the more menu

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DuckDuckGo/NavigationBar/View/MoreOptionsMenu.swift

@@ -328,12 +328,26 @@ final class MoreOptionsMenu: NSMenu {
 #endif // NETWORK_PROTECTION
 
 #if DBP
-        let dataBrokerProtectionItem = NSMenuItem(title: UserText.dataBrokerProtectionOptionsMenuItem,
-                                                  action: #selector(openDataBrokerProtection),
-                                                  keyEquivalent: "")
-            .targetting(self)
-            .withImage(NSImage(named: "BurnerWindowIcon2")) // PLACEHOLDER: Change it once we have the final icon
-        items.append(dataBrokerProtectionItem)
+        var regionCode: String?
+        if #available(macOS 13, *) {
+            regionCode = Locale.current.region?.identifier
+        } else {
+            regionCode = Locale.current.regionCode
+        }
+
+        #if DEBUG // Always assume US for debug builds
+        regionCode = "US"
+        #endif
+
+        // Only show Private Information Removal (DBP) for US based users
+        if (regionCode ?? "US") == "US" {
+            let dataBrokerProtectionItem = NSMenuItem(title: UserText.dataBrokerProtectionOptionsMenuItem,
+                                                      action: #selector(openDataBrokerProtection),
+                                                      keyEquivalent: "")
+                .targetting(self)
+                .withImage(NSImage(named: "BurnerWindowIcon2")) // PLACEHOLDER: Change it once we have the final icon
+            items.append(dataBrokerProtectionItem)
+        }
 #endif // DBP
 
 #if SUBSCRIPTION