The complaint filed by the mother of Kremlin critic Alexei Navalny, who died in prison, to get his body returned to her will not be heard by a Russian court until March 4, the Russian state news agency TASS reported on Wednesday. A hearing on the lawsuit filed by Lyudmila Navalnaya will take place in the Siberian city of Salekhard, but the proceedings will not be open to the public, TASS said. Navalny’s team had previously reported that the authorities told his relatives that the body would remain under lock and key for another two weeks due to “chemical tests.” Russian authorities maintain th…