Use PageIdentifier, not WebPageProxy's identifier for WKPageGetIdenti…

…fier

https://bugs.webkit.org/show_bug.cgi?id=241701
rdar://problem/95332001

Reviewed by Chris Dumez.

* Source/WebKit/UIProcess/API/C/WKPage.cpp:
(WKPageGetIdentifier):
Use webPageID, not identifier.

Canonical link: https://commits.webkit.org/251695@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@295690 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/WebKit/UIProcess/API/C/WKPage.cpp

@@ -3191,5 +3191,5 @@ void WKPageDispatchActivityStateUpdateForTesting(WKPageRef pageRef)
 
 uint64_t WKPageGetIdentifier(WKPageRef pageRef)
 {
-    return toImpl(pageRef)->identifier().toUInt64();
+    return toImpl(pageRef)->webPageID().toUInt64();
 }