trunk/ebf43868c89e7f0cfb2cce8764f993b7f010ee57: [dynamo, 3.15] Update IMPORT_NAME generation (#186402)

«In 3.15 the lower 2 bits of the IMPORT_NAME oparg are used to indicate lazy vs eager imports. We need to shift the index left (this was causing SyntaxError: 'lazy import' is only allowed at module level previously in ge...»