NEW YORK - The photographer Annie Leibovitz’s $24 million loan was due Tuesday, but by the end of the work day, it appeared that little had happened between her and her lender. Although Sept. 8 was widely reported as Ms. Leibovitz’s day of reckoning, the day when she might have to file bankruptcy or lose the rights to her photographs and her homes, both Ms. Leibovitz and her lender, the Art Capital Group, were quiet about what, if anything, was happening between them.