Kamala Harris has weighed in on the LA mayor’s race and issued endorsements in several other contests — but refused to back a gubernatorial candidate. The former VP, who now lives in Malibu, endorsed incumbent Karen Bass for mayor of the second-largest city in the US. “She has my full support for re-election,” the Democrat said. The two have known each other for more than two decades and were once rumored rivals for the vice presidency when Joe Biden pledged to select a woman as his running mate in 2020. Bass, who is serving her first term, was sworn in…