OTTAWA—The economy grew at an annual rate of 5.4 percent in the third quarter of this year as COVID-19 restrictions eased and household spending rose, Statistics Canada said Tuesday. The result is a turnaround for an economy that shrank in the second quarter, and outpaced economists’ expectations for growth in real gross domestic product between July and September. Statistics Canada said the growth in household consumption for the quarter was one of the largest on record and outpaced the growth in disposable income, dropping the savings rate to 11 percent from 14 percent in the second quarter. Money went into high-contact services like restaurants and hotels that were the largest contributors to the quarterly gain, as restrictions eased and Canadians went back to more normal spending patterns. The quarter ended with the economy edging up by 0.1 percent in September. The agency also said preliminary data suggests the economy grew …