[Gardening]: [ iOS Debug ] Two fast/loader/ tests are a flaky failure

https://bugs.webkit.org/show_bug.cgi?id=240918
<rdar://93918602>

Unreviewed test gardening.

* LayoutTests/platform/ios/TestExpectations:

Canonical link: https://commits.webkit.org/250970@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@294817 268f45cc-cd09-0410-ab3c-d52691b4dbfc

LayoutTests/platform/ios/TestExpectations

@@ -3643,4 +3643,7 @@ webkit.org/b/240670 imported/w3c/web-platform-tests/html/semantics/embedded-cont
 
 webkit.org/b/231266 fast/events/ios/rotation/layout-viewport-during-safari-type-rotation.html [ Pass Failure ]
 
-webkit.org/b/227845 [ Debug ] webaudio/audioworket-out-of-memory.html [ Pass Timeout DumpJSConsoleLogInStdErr ]
+webkit.org/b/227845 [ Debug ] webaudio/audioworket-out-of-memory.html [ Pass Timeout DumpJSConsoleLogInStdErr ]
+
+webkit.org/b/240918 [ Debug ]  fast/loader/create-frame-in-DOMContentLoaded.html [ Pass Failure ]
+webkit.org/b/240918 [ Debug ]  fast/loader/user-style-sheet-resource-load-callbacks.html [ Pass Failure ]