gh-148653: Fix some marshal errors related to recursive immutable objects (GH-148698)

gh-148653: Fix some marshal errors related to recursive immutable objects (GH-148698)

Forbid marshalling recursive code, slice and frozendict objects which
cannot be correctly unmarshalled.
Reject invalid marshal data produced by marshalling recursive frozendict
objects which was previously incorrectly unmarshalled.
Add multiple tests for recursive data structures.