Use ASCIILiteral for JSC::HashTableValue::m_key since the key is always a string literal. This allows JSC::reifyStaticProperties() to call a more optimal Identifier::fromString(VM&, ASCIILiteral) overload.
Pull request: https://github.com/WebKit/WebKit/pull/660
Committed r294346 (250658@main): <https://commits.webkit.org/250658@main> Reviewed commits have been landed. Closing PR #660 and removing active labels.
<rdar://problem/93452636>