This got consensus recently in TC39 (https://github.com/tc39/ecma262/pull/1372), and some tests for static fields (see bug #194095) depend on it (see https://github.com/tc39/test262/pull/2057).
Turns out JSC was already having 'name' available early enough, so no real changes were needed in the end compared to other engines (see bug #194095, where an implementation for static fields is already available). Closing for now.