Issue: Cronet transport uses a hardcoded 4 KB read buffer, causing performance degradation for large gRPC…

Issue: Cronet transport uses a hardcoded 4 KB read buffer, causing performance degradation for large gRPC…: a task in LegoFlow-SWE (Harbor dataset). When data is read from the Cronet transport during a gRPC call, the underlying stream always uses a 4 KB (4096 byte) buffer. This buffer size is…