BERLIN — When Germany and China launched their government consultations a decade ago, Angela Merkel was still chancellor and their relations seemed an endless opportunity for trade and profit. The dialogues were a time for pomp and circumstance, trade deals and signing ceremonies, red carpets and military salutes. But on Tuesday, Germany’s chancellor, Olaf Scholz, and China’s premier, Li Qiang, will relaunch the consultations after a three-year hiatus during the pandemic in a very different world — one with new calculations over political vulnerabilities and economic dependencies. The two countries return…