NEW YORK — After weeks of uber-contagious omicron subvariants rippling across New York, something else is finally spreading: good news. The state’s weeklong COVID-19 case rate fell for the sixth straight day on Monday, hitting its lowest level since May 7, Gov. Kathy Hochul’s office said. Daily coronavirus death tolls have climbed after slipping into the single digits some days last month, and the state announced 24 more deaths on Monday. But the sustained case decline offered a welcome signal as New Yorkers hope for a summer free of virus anxieties. “As we continue to monitor the numbers, I e…