[JSC] Stop ignoring useWebAssembly=1 when JIT is disabled

https://bugs.webkit.org/show_bug.cgi?id=263763

Reviewed by Justin Michaud.

It's true that WebAssembly won't yet *run* sensibly with JIT off,
but ENABLE(WEBASSEMBLY) && !ENABLE(JIT) *is* a valid build configuration now,
so JSC should permit enabling useWebAssembly even when JIT is disabled.

* Source/JavaScriptCore/runtime/Options.cpp:
(JSC::disableAllJITOptions):

Canonical link: https://commits.webkit.org/270100@main

Source/JavaScriptCore/runtime/Options.cpp

@@ -617,10 +617,10 @@ static inline void disableAllJITOptions()
     Options::useJITCage() = false;
     Options::useConcurrentJIT() = false;
 
-    Options::useWebAssembly() = false;
+    if (!OptionsHelper::wasOverridden(Options::useWebAssemblyID))
+        Options::useWebAssembly() = false;
 
     Options::usePollingTraps() = true;
-    Options::useLLInt() = true;
 
     Options::dumpDisassembly() = false;
     Options::asyncDisassembly() = false;