LibWeb: Always return a KeyAlgorithm from RsaHashedKeyAlgorithm

The spec never mentions the possibility for the `hash` member of
`RsaHashedKeyAlgorithm` to be a string, it should be a `KeyAlgorithm`
object containing a `name` string member.

Does not fix any WPT test now, but will eventually.

Spec: https://w3c.github.io/webcrypto/#dfn-RsaHashedKeyAlgorithm

Libraries/LibWeb/Crypto/KeyAlgorithms.cpp

@@ -179,7 +179,10 @@ JS_DEFINE_NATIVE_FUNCTION(RsaHashedKeyAlgorithm::hash_getter)
     auto hash = TRY(Bindings::throw_dom_exception_if_needed(vm, [&] { return impl->hash(); }));
     return hash.visit(
         [&](String const& hash_string) -> JS::Value {
-            return JS::PrimitiveString::create(vm, hash_string);
+            auto& realm = *vm.current_realm();
+            auto object = JS::Object::create(realm, realm.intrinsics().object_prototype());
+            MUST(object->create_data_property("name", JS::PrimitiveString::create(vm, hash_string)));
+            return object;
         },
         [&](GC::Root<JS::Object> const& hash) -> JS::Value {
             return hash;

Tests/LibWeb/Text/input/Crypto/SubtleCrypto-import-rsaoaep-minimal_jwk.html

@@ -16,7 +16,7 @@
         );
         println(key.extractable);
         println(key.algorithm.name);
-        println(key.algorithm.hash);
+        println(key.algorithm.hash.name);
         println(key.algorithm.publicExponent);
         done();
     });