fix sendfwd with `send` and `method_missing` #863

Job	Run time
make (check, cppflags=-DVM_CHECK_MODE)	8m 20s
make (check, i686)	11m 1s
make (check, --disable-yjit)	7m 31s
make (check, --enable-shared --enable-load-relative)	7m 18s
make (check, --with-shared-gc)	7m 42s
make (test-bundler-parallel)	24m 21s
make (test-bundled-gems)	17m 28s
make (check, ubuntu-20.04)	9m 13s
Ubuntu result	1s
	1h 32m 55s

Provide feedback