Instacart posted its strongest order growth since 2022 for a second straight quarter and beat earnings estimates for the current period, a sign of resilience in its core delivery business after it rolled out initiatives to cater to price-conscious consumers.Orders grew 17% to 82.7 million in the April-to-June period, the company said in a shareholder letter Thursday, beating the average analyst estimate of 80.8 million. That is a faster jump than in the beginning of the year and it’s the biggest...