On the heels of a $400 million round at a $3.4 billion valuation, Instacart has agreed on a $4.65 million fee to settle a class-action lawsuit around claims that the on-demand grocery delivery startup misclassified its personal shoppers as independent contractors, and also failed to reimburse them for their work expenses, Recode reports. There are more than 31,000 Instacart shoppers involved in …