Fix Nested Instantiate (backport #4018) (#4026)

* Fix Nested Instantiate (#4018)

* minimal reproduce Nested Instantiate bug

* expose cache and elaborated defination to inner defination

* fix up

(cherry picked from commit 02b01e8b

)

# Conflicts:
#	core/src/main/scala/chisel3/experimental/hierarchy/core/Definition.scala
#	core/src/main/scala/chisel3/experimental/hierarchy/core/Instance.scala
#	core/src/main/scala/chisel3/internal/Builder.scala
#	src/main/scala/chisel3/aop/injecting/InjectingAspect.scala
#	src/main/scala/chisel3/stage/phases/Elaborate.scala

* Resolve backport conflicts

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Co-authored-by: Jiuyang Liu <liu@jiuyang.me>
Co-authored-by: Jack Koenig <koenig@sifive.com>