[JIT] Enable ModuleList non-literal indexing (#53410)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/53410
**Summary**
This commit enables indexing into `ModuleList` using a non-literal
index if the LHS of the assignment statement of which the indexing is
the RHS is annotated with an interface type.
This feature already exists for `ModuleDict`, and this commit builds on
top of that implementation. A `prim::ModuleContainerIndex` operator is
emitted for any statement of the form `lhs: InterfaceType =
module_container[idx]`. The same operator has to be used for both
`ModuleDict` and `ModuleList` because serialization does not preserve
the metadata that indicates whether a `Module` is a `ModuleDict` or
`ModuleList`.
**Testing**
This commit extends the existing unit tests for non-literal `ModuleDict`
indexing to test non-literal `ModuleList` indexing.
**Fixes**
This commit fixes #47496.
Test Plan: Imported from OSS
Reviewed By: gmagogsfm
Differential Revision: D26857597
Pulled By: SplitInfinity
fbshipit-source-id: d56678700a264d79aae3de37ad6b08b080175f7c
