SAN FRANCISCO — President Joe Biden is shoring up his support among tech industry Democrats, some of whom are setting aside their reluctance about a second term to focus instead on preventing a second term for former President Donald Trump. 

Biden swung through the wealthy enclaves of Northern California on Friday to raise money for his re-election campaign, giving him a chance to meet face-to-face with some of the Democratic Party’s wealthiest donors and key allies in the business…