fix: add waiter token to _flush so settled() waits for pending RAF#23

NullVoxPopuli merged 1 commit into

html-next:masterhtml-next/ember-raf-scheduler:masterfrom

NullVoxPopuli-ai-agent:fix/flush-waiter-tokenNullVoxPopuli-ai-agent/ember-raf-scheduler:fix/flush-waiter-tokenCopy head branch name to clipboard