I didn’t know they still existed but apparently, the Blue Dogs and the “Problem Solvers” caucus are getting ready to screw up the Democratic strategy for dealing with the debt ceiling by giving away the store. (That’s what they always do — don’t kid yourself.) This is a very bad idea: A group of House Democrats is secretly crafting a fallback plan to avoid an economy-rattling debt default. The White House wants no part of it. The rogue band of moderate Democrats has spent weeks constructing a break-glass deal with centrist Republicans in case the country goes all the way to the brink on the debt ceiling. As the summertime deadline for action approaches, they’re worried a prolonged standoff could lead to fiscal disaster. But Biden officials and party leaders, however, see it far differently and are bristling at the attempts at a compromise, according to four lawmakers familiar with the discussions. Their party’s message to those plotting centrists: Your efforts are unlikely to succeed and risk hurting our goal of a clean debt ceiling increase. The intraparty friction is growing as Washington’s debt crisis gets less theoretical and more urgent with each passing week. And the freelancing Democratic centrists may not have helped their cause by getting involved just as party leaders began seeing a political advantage in the fiscal fight — as long as they can keep the onus on Speaker Kevin McCarthy to unveil a plan that might pass the GOP-controlled House, with unpopular spending cuts likely…