[exec-ctx] Keep grpc alive if an exec ctx is on the stack (#31208)
[exec-ctx] Keep grpc alive if an exec ctx is on the stack (#31208)


grpc/grpc,grpc/grpc,stanley-cheung/grpc,jtattermusch/grpc,grpc/grpc,grpc/grpc,stanley-cheung/grpc,stanley-cheung/grpc,jtattermusch/grpc,jtattermusch/grpc,jtattermusch/grpc,grpc/grpc,stanley-cheung/grpc,grpc/grpc,jtattermusch/grpc,jtattermusch/grpc,grpc/grpc,stanley-cheung/grpc,stanley-cheung/grpc,jtattermusch/grpc,jtattermusch/grpc,jtattermusch/grpc,stanley-cheung/grpc,jtattermusch/grpc,grpc/grpc,stanley-cheung/grpc,stanley-cheung/grpc,stanley-cheung/grpc,grpc/grpc,stanley-cheung/grpc,jtattermusch/grpc,grpc/grpc,grpc/grpc,grpc/grpc,jtattermusch/grpc,stanley-cheung/grpc