Show chain of references in Ractor errors #12538

Job	Run time
ruby-bench (--warmup=1 --bench=1 --excludes=lobsters)	16m 33s
make (check, i686)	11m 35s
make (test-bundler-parallel, 50)	24m 30s
make (check, --disable-yjit)	7m 22s
make (check, cppflags=-DVM_CHECK_MODE)	9m 44s
make (check, ubuntu-24.04, capi)	10m 7s
make (test-bundled-gems)	20m 21s
make (check, --enable-shared --enable-load-relative)	8m 7s
make-ibm	0s
Ubuntu result	2s
	1h 48m 21s

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