WASHINGTON — Rep. Elaine Luria is one of the U.S. Navy’s staunchest proponents — and one of its most ruthless critics. Luria first drew attention in 2018 as one of seven Democrats with national security backgrounds who flipped red House seats to blue. But the Virginian at times finds herself aligned with Republicans, as she champions defense spending hikes, even flatly saying earlier this year President Joe Biden’s defense budget “sucks.” Now, the 46-year-old former Navy commander serving as