Republican candidates snubbed by President Trump for primary endorsements have found a workaround: Act like he endorsed them anyway.Why it matters: Trump's approval numbers are sagging but he still dominates the GOP, using endorsements to reward allies, punish detractors and reinforce his vise-like grip on the party.Zoom in: It's a dynamic that has led Republicans in races nationwide to covet Trump's blessing, tout his endorsement — and appear a bit misleading when they don't get it.It's reached...