Cherry-pick 261061@main (69098eb). https://bugs.webkit.org/show_bug.cgi?id=253133

    Make memory pressure handler call deleteAllCode with PreventCollectionAndDeleteAllCode
    https://bugs.webkit.org/show_bug.cgi?id=253133
    <rdar://problem/106065668>

    Reviewed by Mark Lam and Yusuke Suzuki.

    The memory pressure handler currently calls
    GCController::deleteAllCode(DeleteAllCodeIfNotCollecting), but it turns out we
    hit the case of a collection being in progress moderately often. We already
    do a bunch of blocky work here to get memory usage down, so let's change this
    to PreventCollectionAndDeleteAllCode to guarantee we can drop all JIT code.

    * Source/WebCore/page/MemoryRelease.cpp:
    (WebCore::releaseCriticalMemory):

    Canonical link: https://commits.webkit.org/261061@main

Author: heycam

Source/WebCore/page/MemoryRelease.cpp

@@ -113,7 +113,10 @@ static void releaseCriticalMemory(Synchronous synchronous, MaintainBackForwardCa
         document->cachedResourceLoader().garbageCollectDocumentResources();
     }
 
-    GCController::singleton().deleteAllCode(JSC::DeleteAllCodeIfNotCollecting);
+    if (synchronous == Synchronous::Yes)
+        GCController::singleton().deleteAllCode(JSC::PreventCollectionAndDeleteAllCode);
+    else
+        GCController::singleton().deleteAllCode(JSC::DeleteAllCodeIfNotCollecting);
 
 #if ENABLE(VIDEO)
     for (auto* mediaElement : HTMLMediaElement::allMediaElements()) {